Measurement of disk parameters. Wheel markings

You can get acquainted with the decoding of the designation of the tire (tire).

The number and bore diameter of the wheel disk mounting holes.

6.5J × 15 H2 5/112 ET39 d57.1- "five holes on a diameter of 112 mm"

The first number is the number of bolts (or nuts) = the number of mounting holes in the disc for bolts or nuts (the most common wheels are with the number of mounting holes from 4 to 6, less often there are 3, 8 or 10. In our case, 5.

The second number is the diameter in mm at which the centers of these holes are located, which is called PCD = Pitch Circle Diameter and in our case it is equal to 112 mm. In the tire industry, both of these parameters are often called "PCD" for chic, and indicating the PCD of a disk they write 5/112. Wheel mounting holes are located on different diameters with tight positional tolerances in relation to the center hole. There is a limited number of such diameters (examples - 98, 100, 112, 114.3, 120, 130, 139.7 and some others, they are used by automakers either by tradition, or as the most suitable for certain types of cars - for example, size 139, 7 is typical for pickups and SUVs). Occasionally there are wheels with two "sets" of 4 or 5 mounting holes, located on two different diameters.


3 holes	4 holes	5 holes
To independently determine PCD = diameter "B" in fig. necessary: measure the distance "A" between the centers of adjacent holes and multiply by the coefficients shown in the corresponding pictures

Disc center hole, hub diameter.

6.5J × 15 H2 5/112 ET39 d57.1- "hole for the hub 57.1 mm"

d 57.1 - Diameter of the centering hole on the disc. Must match exactly the diameter of the landing cylinder on the hub. Often the same wheel (rim) is offered for cars of different companies, so the center hole in the wheel rim must be different. Since, in addition to the centering function, the landing cylinder has one more, no less important - it partially takes on the load that falls on the fastening bolts (pins). Therefore, if the centering hole of the disc you like is larger than the landing cylinder of the hub, you will have to use special centering rings that can be bought at tire centers or ordered somewhere. The outer and inner dimensions of the centering ring must exactly correspond, respectively, to the diameters of the hub cylinder and the centering hole of the disc.

Wheel rim width.

A disc wheel consists of two main parts: the rim and the disc itself. The disc is the central part of the wheel with which the wheel is attached to the vehicle's hub with bolts or nuts. A rim is a cylindrical part of a wheel of a special profile, which is located perpendicular to the disk and serves for mounting a rubber tire on it.

6.5 J × 15 H2 5/112 ET39 d57.1- "the landing width of the disc (rim) 6.5 inches"

6.5 - landing (! Not overall!) Width of the rim of the disc in inches (sometimes the value of the width of the disc in the marking is indicated as a fraction 6 1/2). Width is measured not along the outer sides of the rim, from edge to edge, but along the so-called "disc shelf" on which the sidewalls of the tire rest.
The width of the rim and the tires must strictly correspond to each other so that the tires, after being mounted on the rims, have the optimum shape specified by the manufacturer.

SIZE: always given in inches (1 inch = 25.4 mm), except for Michelin designs which will give dimensions in millimeters.

ATTENTION: The width and diameter are selected according to the size of the rubber tire. To determine the overall width of the wheel rim, add another 26 mm to the value of the width of the rim on the marking. that is, the thickness of the outer and inner bead flanges. The overall width of the rim should be 12 (plus or minus 4) mm less than the profile width of the rubber tire

Wheel rim diameter.

6.5J × 15 H2 5/112 ET39 d57.1- "diameter (size) of a wheel rim 15 inches"

15 - landing (! Not overall!) Diameter of the wheel rim in inches, which must correspond to the landing diameter of the tire. Passenger cars use wheels with a diameter of 12 to 32 inches, the most common diameters of 14-16 inches. 1 inch = 25.4 mm.

Wheel departure... Carrying out a wheel.

6.5J × 15 H2 5/112 ET39 d57.1 - "positive wheel offset 39 mm"

ET = 39 - Offset or offset of the disk in mm (this parameter can also be marked OFFSET and DEPORT). Usually it can be less than standard by 10 mm without problems and, usually, depends on the width of the rim. The smaller the offset, the wider the wheelbase.

The overhang of the disc is the distance between the mating plane of the rim (the plane of which the disc is pressed against the hub) and the middle of the width of the disc (an imaginary plane passing in the middle of the rim).

To determine the wheel offset, measure the "B" dimension from the inside of the wheel. Divide the "X" dimension in half. Subtract X / 2 from dimension "B". If the difference is positive, then the overhang is positive, if it is negative, then the overhang is "negative". Or, in other words:

The overhang is "positive" if the mating plane does not go beyond the imaginary plane.

Departure is "negative" if the mating plane crosses the imaginary plane.

Disc rim flanges, side flanges.

6.5J × 15 H2 5/112 ET39 d57.1 - "rim flange type J"

J (JJ, JK, K, B, P, D ...) This letter encodes technical information about the rim of the disc rim (design, shape, height). The most common types of rims today are J (mainly for two-wheel drive vehicles), and JJ (usually for four-wheel drive). The rim flanges affect the fit of the rubber, compensating weights, and the tire's resistance to displacement on the rim under extreme conditions. Obviously, despite the external interchangeability, for example, of J and JJ discs, it is still better to choose the parameter recommended by the car manufacturer.

Wheel rim shelves and humps.

6.5J × 15 H2 5/112 ET39 d57.1 - "shelves rims and humps type H2"

H (H2, FH, AH, CH ...)- these letters contain information about the design features of the disk rim shelves and the protrusions (humps) on them. Hump is designed for tubeless tires and ensures that the tire fits correctly on the rim. Some tires require special rim parameters in this matter, this point needs to be clarified when buying tires. In the general case, the motorist does not need to delve deeply into the essence of these designations.

Other possible designations.

The disk may also indicate:

Manufacturing date... Usually a year and a week. For example: 0504 means the disc was released in the 5th week of 2004.
SAE, ISO, TUV, PCT ...- stamp of the controlling body. The marking indicates that the wheels comply with international rules or standards.
MAX LOAD 2000lb- very often the designation of the maximum load on the wheel is found (denoted in - kilograms or pounds). The maximum load shown here is 2000 lb (908 kg).
MAX PSI 50 COLD- means that the tire should not exceed 50 psi (3.5kgf / sq. Cm), the word COLD means that the pressure should be measured in a cold tire.
Other

Wheel fixing. The order of tightening the bolts (nuts). 110 Nm 11 kg * m 7/16 inches 80 Nm 8 kg * m 1/2 inch 90 Nm 9 kg * m

Rubber wheel for a passenger car. Matching rubber tires or rims for one car model.

The correct choice of wheel rims depends on the technical characteristics, denoting all parameters, namely, width, diameter, offset, as well as DIA (wheel rim diameter) and PCD (drilling parameters).

You also need to know the designation of the marking. It indicates the standard parameters of all types of wheeled products:

stamping;
alloy wheels;
forged.

Markings are indicated on the inside. Usually, manufacturers duplicate them in the accompanying documents and on the packaging if the product is new.

Disk parameters

To determine what the marking means, you need to know the width and diameter of the wheel product.

Drilling, or bolt pattern

This is one of the more difficult parameters to learn, indicating the diameter of the fastening bolts. Drilling is measured from the center area of the stud to the opposite area of the element on the wheel.

Quite often, manufacturers indicate the parameters of the bolt pattern of the disc through the shot, depending on the number of holes for fastening.

Let's say the numbers are 6 / 222.25. The first number indicates the number of holes for fastening the bolts, and the second number indicates the drill holes in millimeters.

Disc departure

This indicator is marked with the English letters ET. What is ET in disks and why is it? The indicator denotes the distance from the plane of the wheel product to the middle zone of the rim. The seating surface of the wheel product indicates the pressure plane of the disc against the hub.

Departure parameters can be:

with a zero indicator;
with negative;
with a positive.

Zero overhang indicates that the plane of the disc corresponds to its midpoint. Thus, the lower the value, the more the wheel product protrudes from the outside of the vehicle. If the offset indicator is increased, this means that the disc is deepened into the inner area of the car.

It is also necessary to take into account the fact that depending on the width of the product, the departure indicators differ. Manufacturers indicate in the accompanying documentation for the vehicle a lower offset value for wide discs.

Diameter and other parameters of the disc schematically

What is HUMP (H)?

The hump is a ring protrusion on the disc rim. This element is used as protection against a breakdown of a car tire. Typically 2 humps (H2) are used for a wheel.

In some cases, the hump may not be used, or only one is used, depending on the vehicle configuration. Hump varieties:

combined (CH);
flat (FH);
asymmetric (AH).

Disk parameters PCD

The PCD value refers to the circle diameter of the center holes on the wheel rim. That is, it is the diameter of the bolt holes.

DIA disk parameter

The DIA parameter indicates the diameter of the hole located in the center of the disc. Casting manufacturers prefer to create a large diameter DIA center hole. This is done so that the discs are applicable and universal for any type of car.

Despite the fact that the size of the hub may differ depending on the vehicle model, the autodisk is installed using an adapter ring, a bushing.

Marking

As an example, consider the marking of the wheel rim 9J x20H PCD 5 × 130 ET60 DIA 71.60:

The number 9 indicates the width, measured in inches. To convert inches to centimes, the total is multiplied by 25.4.
The letter J indicates structural elements: the shape of the disc flanges. This parameter does not play an important role in the selection.
The X denotes an inseparable disk.
The number 20 denotes the diameter of the fit of the wheeled product. This figure corresponds to the landing of a car tire.
The H indicates the presence of one hump or lip on the rim.
Abbreviation PCD 5 × 130, where 5 indicates the number of holes for fastening nuts or bolts and 130 indicates their PCD diameter in millimeters.
ET60 marking indicates a disc overhang. In this situation, the indicator is 60 mm.
The DIA value 71.60 indicates the center hole diameter. Usually, DIA corresponds to the fit of the hub and is indicated in millimeters. If the DIA is greater than the hub diameter, then a centering ring is used to seat the disc.

Information is also attached to the marking:

ISO, SAE, TUV - these abbreviations indicate the organizations that checked the wheeled product, similar to the Russian GOST. The standards that correspond to the wheel marking are also indicated.

Maxload indicates the permissible load on the vehicle wheel. This figure is indicated in kilograms and pounds.

What does the 700c parameter mean?

This designation is used for large types of wheels for SUVs and Niva. According to the accepted ISO classification, this figure is 29 inches. Typically 700c wheels are used for off-road racing.

Through the use of 29 inch wheels:

management performance improves;
reduced braking distance on unpaved surfaces and increased aerodynamics;
the cross-country ability of the car on soft soils and sands increases;
it becomes possible to install powerful brakes.

In order to find the right wheels for a particular type of car, it is recommended to determine the diameter of the wheel and analyze the markings on the rim. Also, do not forget that safe driving ultimately depends on this element.

Looseness of wheel disks is a set of measured parameters of a wheel that you need to know during installation. You can measure the necessary indicators yourself or use special tables for this, which are different for each car brand.

What dimensions are important to determine before purchasing wheels? What does the complete wheel formula look like? What are the dimensions of spare parts for domestic cars?

Disc size indicators

There are five basic dimensions, a mistake in determining which will make it impossible to install a wheel.

These include:

number of bolt holes (LZ);
the distance between them;
the diameter of the circle on which they are located (PCD);
diameter of the center (hub) window (DIA);
departure (ET).

The number of bolt windows on passenger cars varies from 3 to 6. For trucks, this figure reaches 12-15 pieces. Cars made in Togliatti have 4 inputs for bolts. An exception is the Niva fret, the wheels of which are fastened with five bolts each. The measurement of the number of holes is carried out visually, by simple counting.

How to measure yourself

The looseness of the discs also includes the distance between the windows. You can measure it with a caliper or ruler. Measurement is made from the center of one hole to the center of another. There are two ways: the distance between adjacent holes and the farthest holes.

Adjacent holes

The indicator under consideration is determined taking into account the dimensions of the circle on which the centers of the bolt slots are located. The diameter is determined from the compatibility tables or measured with a ruler.

To do this, measure the distance between adjacent bolts, and then multiply the resulting figure by a factor depending on the number of holes. The transverse circumference indicator for VAZ cars is 98 mm for passenger models and 139.7 mm for the Niva SUV.

The simplest is to measure on discs with an even number of holes (for 4, 6, 8 bolts), the distance between opposite holes will be the PCD value.

For discs for 5 bolts, the distance between any non-adjacent holes is measured, and the resulting figure is multiplied by 1.051.

Hub window diameter

The indicator of the central hub window is indicated both in the tables and in the full bolt pattern, which will be discussed below. In the absence of the necessary information, this indicator is easily measured using a ruler or caliper. The diameter of the VAZ-2110 hub seat is 58.6 mm.

Note: it is not always possible to measure the center hole, since on some cars it is of an irregular shape. A striking example is the Daewoo Nexia pre-styling version.

The looseness of the wheel disks is determined taking into account their departure. Outreach is the ratio of the vertical axis of symmetry of the disc to the point of contact with the hub. Departure can be negative, positive, or zero.

Installing an incorrectly selected disk for this factor is possible. However, it disrupts the suspension and makes the vehicle unsafe.

Complete and abbreviated bolt pattern

As a rule, on wheels from the factory, a complete formula is indicated that displays all the necessary parameters. In colloquial speech, motorists often use a short and recognizable designation that does not give a complete picture of the product. Let's consider each of the formulas separately.

Abbreviated

The abbreviated formula for determining the measured values is called PCD (Pitch Circle Diameter). It includes two sizes and looks like this: 4ˣ98 (wheel bolt pattern for VAZ-2110). The number "4" here denotes the number of bolt cutouts, the number "98" - the result of the transverse measurement of their circumference.

Common PCD values: 98, 100, 108, 112, 114.3, 120, 130, 139.7.

A common mistake is setting a 98 disc to a 100 hub, since the difference is not visually visible. The result will be a skew and incomplete adhesion of the disc to the hub.

The abbreviated formula allows you to select the required spare part that can be installed on the car. However, an incorrect bolt pattern on other parameters will not allow the vehicle to be fully exploited.

Full

How to find out the bolt pattern by the full formula, which is indicated on the disc at the factory and has the following format: 7.5 Jˣ15 H2 5ˣ100 ET 40 D 54.1? Let's consider what each alphanumeric group of this encoding stands for.

7.5 JX 15 - 7.5 "rim width, 15" diameter. The letter "X" indicates that the wheel is cast or forged, the letter "J" - that the products should be used only on mono-drive cars (marking for all-wheel drive cars - JJ).
H2 is the number of end protrusions (humps) designed to hold the tubeless tire. Variants with one projection ("H1") or without them ("AH") are possible. Hump (bump, elevation) - provides reliable fixation of the tire in turns, avoids depressurization.
Marking Decryption
H Hump
H2 Double hump
FH Flat hump
FH2 Double flat hump
CH Combination Hump
EH2 Extended hump
EH2 + Extended Hump 2+
AH Asymmetric Hump
PCD 5-100 is the bolt pattern discussed in the previous sub-clause of this article.
ET 40 (short for German Einpress Tief) is a departure indicator. In the example shown, a positive overhang of 40 mm is indicated. If the overhang is negative, a "-" sign is placed in front of the digit; if it is zero, a "0" sign is placed. The overhang determines where the mating plane will be located. Deviation from the manufacturer's recommended values leads to a change in the direction and magnitude of the forces that act on the suspension.
D 54.1 - hub bore diameter in mm (DIA).

Marking	Decryption
H	Hump
H2	Double hump
FH	Flat hump
FH2	Double flat hump
CH	Combination Hump
EH2	Extended hump
EH2 +	Extended Hump 2+
AH	Asymmetric Hump

Note: The rim width and diameter are measured in inches. 1 inch equals 2.54 cm. The rest of the bolt pattern is usually measured in millimeters.

Bolt tables 4 × 98, 4 × 100, 4 × 108, 5 × 100, 5 × 108, 5 × 112

car brand	Model
VAZ	2110-12
	Classic
	Grant
	Viburnum
	Priora
	2108-99
Alfa romeo	145
	146
	33 Sport Wagon
	MiTo
Citroen	Nemo
Fiat	500
	Albea
	Barchetta
	Brava
	Bravo
	Bravo HGT
	Cinquecento
	Coupe
	Coupe 16V turbo
	Coupe BV6
	Doblo
	Doblo 4X4
	Fiorino
	Idea
	Linea
	Marea
	Multipla
	Multipla 2
	Palio
	Panda
	Panda 4 × 4
	Punto
	Qubo
	Seicento
	Seicento Sporting
	Stilo
Ford	Ka
Lancia	Delta
	Lybra
	Musa
	Y
	Ypsilon
Peugeot	Bipper

car brand	Model
Acura	EL
Acura	Integra
Bmw	Z1
Chery	Amulet
	Kimo
	Kimo (A)
	QQ6
	QQ6 (S21)
Chevrolet	Astra
	Aveo
	Cobalt
	COBALT SS
	Lanos
	Spark
Citroen	C1
Citroen	C15
Daewoo	ESPERO
	Kalos
	Lanos
	Nexia
	Nubira
Daihatsu	Applause
	Atrai
	Atrai 7
	Boon
	Charade
	Cuore
	Coo
	Copen
	Esse
	Gran move
	GRANDE MOVE
	Leeza
	MAX
	Materia
	Mira
	Move
	Naked
	Opti
	Pyzar
	Sonica
	Storia
	Sirion
	Trevis
	Tanto
	YRV
Dacia	LOGAN
Dacia	SANDERO
Isuzu	Gemini
	Pa Nero
	Piazza
FAW	Vita
Fiat	Grande punto
Fiat	Punto
Geely	MK
	Otaka
	Vision
Great wall	GWPeri
Great wall	Peri
Hyundai	Accent
	Amica
	Atos
	Atos prime
	Getz
	i10
	i20
	Solaris
	VERNA
	Verna Hatchback
	Verna sedan
Honda	Accord
	Airwave
	Beat
	Capa
	City
	Civic
	CIVIC VTI
	Concerto
	CR-X
	Domani
	Fit
	FIT SPORT
	Freed
	Insight
	Integra
	Jazz
	JAZZ 4X4
	Life
	Logo
	Mobilio
	Orthia
	Thats
	Today
	Vamos
	Zest
Kia	Picanto
	Rio
	Rio II
	Shuma
	Shuma II
	Spectra
Lifan	Smily
Lifan	Solano
Lotus	ELISE
	EUROPA S
	Evora
	EXIGE
Mazda	AZ-1
	AZ-3
	AZ-Wagon
	Carol
	Demio
	Familia
	Lantis
	Laputa
	Revue
	Roadster
	Scrum wagon
	Spiano
	Verisa
	2
	323
	MX-5
	MX-5 Miata
	MX-5 ROADSTER
MG	TF
	ZR
	ZS
Mini	Mini
	Clubman
	Clubman s
	Cooper
	Cooper Cabrio
	Cooper Cabrio S
	COOPER CABRIOLET
	COOPER CABRIOLET S
	Cooper S
	Cooper S Cabrio
	One
Mitsubishi	Carisma
	Colt
	eK
	I
	Lancer
	Libero
	Minica
	Mirage
	Toppo
	Toppo bj
	Townbox
Nissan	Be-1
	Bluebird
	Cube
	Figaro
	Luchino
	March
	Micra
	Micra C + C
	Moco
	Note
	NX
	OTTI
	Pino
	Presea
	Pulsar
	Rasheen
	Sunny
	Tiida
	Wingroad
Opel	Agila
	Agila II
	Astra
	ASTRA G
	Astra H
	COMBO
	COMBO TOUR
	Corsa
	Corsa b
	Corsa c
	CORSA COMBO
	Corsa d
	Calibra
	Meriva
	Tigra
	Tigra A
	Tigra B
	TIGRA TWINTOP
	Vectra
	Vectra A
	Vectra B
	Vita
Peugeot	107
Renault	CLIO
	CLIO 3
	Clio ii
	Clio II Sport
	Clio iii
	Clio IV R
	Kangoo
	KANGOO 4WD
	Kangoo compact
	LAGUNA
	LAGUNA (B56)
	Logan
	Megan ii
	MEGANE
	MEGANE 2
	MEGANE 2 CC
	MEGANE GRAND SCENIC
	Megane scenic
	MODUS
	Sandero
	Sandero stepway
	Scenic
	Scenic II
	Symbol
	TWINGO
Rover	25
	25 STREETWISE
	400
	45
	Street wise
Saab	9-2 X Aero
Saturn	Ion
Saturn	SC
Scion	xA
Scion	xB
Seat	AROSA
	AROSA (100)
	Cordoba
	CORDOBA (110)
	CORDOBA VT
Skoda	Felicia
Subaru	Dex
	Justy
	JUSTY II
	Justy iii
	Justy iv
	Pleo
	R1
	R2
	Rex
	Sambar
	Stella
	Vivio
Suzuki	Aerio
	Alto
	BALENO
	Cara
	Cervo
	Cultus
	Every wagon
	Kei
	Ignis
	Liana
	Liana ll
	MR Wagon
	Palette
	Solio
	Splash
	Swift
	Swift ll
	Twin
	Wagon R
	WAGON R +
Toyota	Allex
	Augo
	Aygo
	bB
	Belta
	Carina
	Corolla
	Corolla ii
	Corona
	Corsa
	Corolla verso
	Cynos
	Duet
	Funcargo
	iQ
	Ist
	MR-S
	MR2
	Passo
	Platz
	Porte
	Prius
	Pro Box
	Ractis
	Raum
	Serra
	Sienta
	Sparky
	Sprinter
	Starlet
	Succeed
	Wagon
	Tercel
	Vitz
	Will
	Yaris
	YARIS 1,5TS
	YARIS 2
	YARIS D4D
	Yaris verso
Volkswagen	Corrado
	Golf
	Jetta
	Lupo
	LUPO GTI
	Pointer
	Polo III
	Passat
	Polo
	Santana
	Vento
ZAZ	Chance
VAZ	Largus
TagAZ	Accent
	Doninvest Assol (L100)
	Vortex corda

car brand	Model
Audi	80
Audi	Cabriolet
Citroen	Berlingo
	C2
	C3
	C3 Picasso
	C3 Pluriel
	C3 X-TR
	C4
	C4 COUPE
	C4 Picasso
	C5
	DS3
	DS4
	Grand C4
	Saxo
	SAXO VTS
	Xantia
	Xsara
	XSARA COUPE
	XSARA COUPE VTR
	XSARA COUPE VTS
	Xsara picasso
Ford	Cougar
	COUGAR ST200
	Escort
	Fiesta
	FIESTA ST
	Focus
	FOCUS RS
	FOCUS ST170
	Fusion
	Ka
	Mondeo
	Puma
	SPORT KA
	STREET KA
Peugeot	1007
	106
	205
	205GTI
	206
	206 CC
	206 SW
	207
	3008
	306
	306 CABRIOLET
	306 S16
	307
	307 CC
	307 SW
	308
	308 CC
	308 SW
	309
	405
	406
	406 COUPE
	408
	Partner
	Partner Origin VU
	Partner Tepee
	Partner VU
Volvo	850
Lifan	Breez
Mazda	2
Saleen	S121
TagAZ	Doninvest Orion (J100)

car brand	Model
Audi	A1
	A2
	A3
	S3
	TT
Chevrolet	Cavalier
	CAVALLIER LS
	CAVLLIER COUPE
	CAVLLIER COUPE Z24
	Sonic
Chrysler	NEON
	Neon ii
	PT cruiser
	PT Cruiser Cabrio
	Sebring
	SEBRING CABRIOLET
	SEBRING COUPE
	SEBRING Sedan
	VOYAGER
Dodge	Caravan
	Neon
	Stratus
Honda	Civic
Lexus	CT200h
MG	ZT
MG	ZT-T
Nissan	Sunny
	Plymouth
	Neon
	Pontiac
	Sunfire
	SUNFIRE GT
	Vibe
Rover	75
Saab	9-2x
Scion	tC
Scion	xD
Seat	Cordoba
	CORDOBA (110)
	CORDOBA VT
	Ibiza
	IBIZA (130)
	IBIZA SC
Skoda	Fabia
	FABIA (130)
	Fabia ll
	OCTAVIA
	OCTAVIA 4WD
	OCTAVIA SRC 4WD
	Octavia tour
	PRAKTIK
	Roomster
Subaru	Baja
	Alcyone
	Exiga
	Forester
	FORESTER
	FORESTER (USA)
	Forester I
	Forester II
	Forester III
	FORESTER STI
	Impreza
	Impreza anesis
	Impreza II
	Impreza III
	IMPREZA WRX
	IMPREZA WRX STI
	LEGACY
	Legacy lancaster
	Legacy ii
	Legacy iii
	Legacy iv
	LEGACY SPECB
	OUTBACK
	Outback I
	Outback ii
	Qutback III
	Traviq
	Xv
Toyota	Allion
	Avensis
	Avensis ll
	Caldina
	Camry
	Carina
	Cavalier
	Celica
	CELICA T23
	Corona
	Curren
	Ist
	Opa
	Premio
	Prius
	Matrix
	Vista
	Voltz
	Will
	Wish
Volkswagen	Beetle (A4)
	Bora
	BORA (130)
	Cross polo
	Corrado
	Golf
	Fox
	GOLF 4
	GOLF 4 (170)
	GOLF 4 R32
	Lupo
	LUPO GTI
	New beetle
	POLO
	POLO GTI
	Polo IV
	Polo sedan
	Polo V
	Polo v sedan
	Vento
GAS	Siber

car brand	Model
Alfa romeo	166
Aston martin	V12 Vanquish
Aston martin	Vanquish s
Chery	M11
Citroen	C5
	C6
	Jumpy
	XM
Ferrari	348 GT
	348 Spider
	355 F1 Berlinetta
	355 F1 GTS
	355 F1 Spider
	360 MODENA
	360 Spider
	456 GT
	456 GTA
	458 ITALIA
	512 TR
	550 Barchetta Pininfarina
	550 MARANELLO
	575 M Maranello
	599 GTB Fiorano
	Challenge stradale
	F355 Berlinetta
	F355 GTS
	F355 Spider
	F430 Challenge
	F430 Spider
	F50
	F512 M
	Superamerica
Ford	C-Max
	Focus
	FOCUS 2
	FOCUS 2 ST
	Focus C-Max
	FOCUS CC
	FOCUS RS
	Galaxy
	Kuga
	Mondeo
	MONDEO ST220
	S-Max
	Taurus
	Taurus SE / SEL
	Thunderbird
	Tourneo connect
	Transit Connect
Jaguar	S Type CCX
	S Type Estate
	S-TYPES-TYPE V8 R
	X-TYPE
	XF
	XJ
	XJ6
	XJ8 SE
	XK
	XKR
Renault	AVANTIME
	CLIO
	Clio IV Sport 197
	Clio V6 Evo Sport
	ESPACE
	Espace III Grand Espace
	Espace IV
	Kangoo
	KANGOO II
	LAGUNA
	Laguna 5 stud
	LAGUNA II
	Laguna ii g
	Megan ii
	MEGANE 2 CC
	Megane II CC Coupe / Cabrio
	Megane ii turbo
	Scenic
	Scenic II
	VEL SATIS
Lancia	Thesis
Land rover	Evoque
Land rover	Freelander 2
Lincoln	LS
	LS6
	LS8
	MKS
Mercury	Sable
MG	XPower SV
Maserati	3200 GT
	Coupe
	Gran turismo
	Gran turismo s
Peugeot	407
	407 Coupe
	407 SW
	508
	605
	607
	RCZ Sport
Volvo	240
	740
	760
	780
	850
	940
	960
	C30
	C70
	C70 Convertible
	C70 Coupe
	C70 Coupe Cabrio II
	S40
	S40 II
	S60
	S70
	S80
	S80 II
	S90
	S90 (204)
	V50
	V70
	V70 (193)
	V70 (250)
	V70 (300)
	V70 I
	V70 II
	V70 III
	V70 XC
	V90
	XC60
	XC70
	XC70 II
	XC70 III
	XC90
GAS	3102
GAS	31105

car brand	Model
Audi	100
	A3
	A4
	A4 ALLROAD
	A4 Allroad quattro
	A4 CABRIOLET
	A5
	A6
	A6 Allroad quattro
	A7
	A8
	Allroad
	RS4
	RS5
	RS6
	Q3
	Q5
	R8
	R8 V10
	S3
	S4
	S5
	S6
	S7
	S8
	TT
	TT S
	TT RS
	V8
Bentley	Azure
	Continental
	CONTINENTAL GT
	MULSANNE
Bmw	M3
Chrysler	CROSSFIRE
Ford	Galaxy
Lamborghini	GALLARDO
	Gallardo LP550-2
	Gallardo LP560-4
	Gallardo LP570-4
Mercedes-Benz	A-Klasse (W168)
	A-Klasse (W169)
	B-Klasse (W245)
	B-Klasse (W246)
	C-Klasse (CL203)
	C-Klasse (W202)
	C-Klasse (W203)
	C-Klasse (W204)
	CL-Klasse (C140)
	CL-Klasse (C215)
	CL-Klasse (C216)
	CLC-Klasse
	CLK-Klasse (W208)
	CLK-Klasse (W209)
	CLS-Klasse (C219)
	E-Klasse (W210)
	E-Klasse (W211)
	E-Klasse (W212)
	GL-Klasse (X164)
	GLK-Klasse (X204)
	M-Klasse (W163)
	M-Klasse (W164)
	M-Klasse (W166)
	R-Klasse (W251)
	S-Klasse (W140)
	S-Klasse (W220)
	S-Klasse (W221)
	SL-Klasse (R230)
	SLK-Klasse (R170)
	SLK-Klasse (R171)
	SLR-Klasse
	Vaneo
	Viano
	Vito
	W 203 (CLC)
	W 204 (GLK)
	W 212 (E)
	W129 (SL)
	W129 (SL) MILLE MIGL
	W140 (S)
	W140 (SEC) COUPE
	W163 (ML)
	W163 (ML) ML55AMG
	W164 (ML) 63AMG
	W164 (ML)
	W168 (A)
	W169 (A)
	W170 (SLK)
	W202 (C)
	W203 (C)
	W203 (C) AMG
	W203 (C) KOMPRESSOR
	W203 (C) SPORT COUPE
	W204 (C)
	W208 (CLK)
	W210 (E)
	W211 (E)
	W211 (E) KOMPRESSOR
	W215 (CL) COUPE
	W215 (CL) COUPE 55 A
	W219 (CLS)
	W220 (S)
	W221 (S)
	W230 (SL)
W231 (SL)
W245 (B)
W251 (R)
W251 (R) 63AMG
W414 (VANEO)
W638 (V)
W638 (VITO)
WX164 (GL)
X 204 (GLK)
300SE
400SEL
500SE
500SEL
500SL
600SE
600SEL
600SL
A160
A170
A190
A200
B170
B200
C180
C200
C220
C230
C240
C250
C280
C300
C320
CL500
CL550
CL600
CLK200
CLK240
CLK320
CLK350
CLS350
CLS500
CLS550
E220
E230
E240
E280
E300
E320
E350
E400
E430
E500
E550
ML270
ML320
ML350
ML430
ML500
ML550
R350
R500
R550
S280
S320
S350
S400L
S430
S500
S500L
S550
S600
S600L
SL320
SL350
SL500
SL550
SL600
SLK200
SLK230
SLK280
SLK320
SLK350
V230
V350
Maybach	57
	57 S
	62
	62 S
	Landaulet
Seat	ALHAMBRA
	ALHAMBRA (130)
	Alhambra facelift
	Altea
	Altea freetrack
	Altea xl
	EXEO
	EXEO ST
	LEON
	Leon ll
	Toledo
	TOLEDO (130)
Skoda	OCTAVIA
	OCTAVIA 4WD
	Octavia ll
	Octavia lll
	Octavia scout
	OCTAVIA SRC 4WD
	Octavia tour
	Superb
	Superb ll
	Yeti
Ssang yong	Actyon
	Chairman
	New actyon
Volkswagen	Beetle (A5)
	Caddy
	CrossTouran
	Cross golf
	Eos
	GOLF 5
	GOLF 5 GTi
	GOLF 5 PLUS
	GOLF 6
	GOLF 6 GTi
	Jetta
	JETTA 2
	JETTA 5
	JETTA 6
	Passat
	Passat cc
	PASSAT W8
	Phaeton
	PHAETON W12
	Scirocco
	Sharan
	SHARAN SYNCRO
	T4
	Tiguan
	Touran
	Transporter
	Vanagon

Is it possible to install wheels with an unsuitable bolt pattern

Some motorists, in an attempt to save money on the purchase of spare parts with the necessary parameters, purchase products that do not correspond to the car brand. Such wheels undergo self-processing, expand the hub hole, change the location of the bolt positions, and then put them on the car.

Theoretically, such a refinement is possible, but the work must be carried out with maximum accuracy. It is impossible to measure the disc so correctly in garage conditions. And inaccurately drilled cutouts lead to wheel runout, destruction of the hub and suspension elements, and a violation of the stability of the car on the road.

Competent revision of the car in conditions close to factory conditions is not economically feasible. The work will cost more than purchasing a wheel that initially fits all sizes.

The selection of car disks should be treated with great care and attention! Each disc has several parameters for installation on a car, each of which must be taken into account when choosing. Some parameters are unchanged, and some can be adjusted within a small range. This article will tell you about all the intricacies of choosing cast and forged wheels.

Disk parameters

Size A(rim diameter in inches) - rim diameter - diameter of the annular part of the rim on which the tire rests.

Size B(rim width in inches) - rim landing width - the distance between the inner surfaces of the bead flanges of the wheel. Determines the possible section width of the tire to be installed. A deviation of the landing width of 0.5-1 inch is allowed, but for low-profile tires it should be minimal.

HUMP(width in inches) - annular protrusion, serves for additional fixation when mounting tubeless rubber beads.

ET(overhang in mm) - disk overhang (take-out), i.e. a parameter that determines how deep the wheel is sunk into the car's arch. Reach is the distance from the plane of the disc adjacent to the vehicle hub to the plane passing through the axial center of the width of the disc rim. For each vehicle, the manufacturer provides a list of acceptable wheel alignment options. This parameter can be changed by +/- 5 mm without harm to the car's suspension. With a big deviation, it is obligatory to try on the disc on both the front and rear axles of the car, since it is possible that the disc will rest against the suspension elements, wheel arch liners or parts of the car's brake system. In addition, the installation of wheels with an offset that is significantly less than provided, leads to a significant decrease in the stability of the car in turns, increased sensitivity of the steering to road irregularities and uneven braking forces.

PCD- the number of mounting holes and the diameter of the circle of the centers of these holes. This value must correspond to the standard value, otherwise it is impossible to achieve reliable fixation of the wheel on the car hub. A deviation of even 1-2 mm can lead to skewing of the wheel and fasteners.

DIA(CO in mm) - diameter of the central hole of the disc. It must match the diameter of the centering lug on the vehicle hub. The deviation of its value upwards is allowed. In this case, adapter centering rings are used to install the wheel.

Disk parameters can be designated as follows, for example:

6x15 ET45 5x100 D57.1

6 - disc width in inches;

15 - disc diameter in inches

ET45- overhang (removal) of the disk (in mm);

5x100 - PCD, the number of mounting holes at a specific location diameter. It should be taken into account that for each machine it (diameter) is different and it cannot be changed under any circumstances;

D57.1 - DIA (CO)

or like this:

6.5 J 15 H2 5x114.3 ET45 D54.1

6.5 - disc width in inches;

15 - disc diameter in inches;

5x114.3 - PCD, the number of mounting holes at a certain location diameter .;

ET45- overhang (removal) of the disk (in mm);

D54.1 - DIA (CO) diameter of the central hole of the disc, measured in mm;

J and H2- symbols more needed by specialists. V J information about the design of the rim flanges is encrypted (can be JJ, JK, K or L). A H2- this is the code for the design of humps, annular protrusions on the rim landing flanges, which serve to securely hold the tubeless tire on the rim (there are many variations: H, FH, AH, etc.);

Sometimes car owners are faced with the need to replace the discs on their car with new ones. But one has only to come to the store, motorists are immediately lost, such a large assortment of wheels is presented in them. It is not possible to choose something specific. When choosing disks, you need to take into account a huge number of parameters. One of these is the diameter of the disc's center hole. You can find out about what it is, what it affects, what characteristics are better for your car, you can find out from this article.

What parameters do you need to know when selecting disks?

At first glance, it may seem that choosing a new rim for your wheel is not difficult. But then you come across designations of the following type: 4 * 108, 6S ET47, Dia 62.5, R17. Yes, it is in this form that all technical characteristics are indicated. Because discs have many parameters that you need to consider when buying. What do they include?

Disc type: cast or stamped.
Mounting holes: number and diameter.
Hub shape.
Center hole (hub) diameter.
The circumference of the disc.

If these nuances seem superfluous, then any wheel magazine can help you. If you want to understand all the details yourself, let's try to understand what the diameter of the central hole of the disc is. What is this?

What is the diameter of the center hole of the disc?

This hole in the middle of the disc, which, despite its seeming simplicity, determines many parameters of the car. In the list of wheel characteristics, it is usually marked as Dia or just D. Do not confuse it with the designation PED, which indicates the size of the mounting holes. The diameter of the center hole of the disc must exactly match the diameter of the landing cylinder on the hub. Often, the same discs are produced for several car brands at once, therefore, before buying, it is imperative to check the compliance of this parameter with the manufacturer's specifications. The disc may not stand up properly, hold loose, because of which you will constantly feel vibrations and uneven wheel travel. Better yet, buy original parts. If this is not possible, then carefully study the options for the size of the central hole. Usually a deviation of 2-5 mm is allowed on cast discs and 0.01 mm on stamped discs.

What parameters are affected by the center hole?

Manufacturers of modern wheel rims are faced with a huge number of brands and models with different parameters. Naturally, it would be pointless and very costly to produce discs individually for each car. Therefore, companies are following the path of least resistance: they produce wheels with the largest possible center hole. And this does not have a very good effect on the car's behavior, especially at high speeds. What other parameters does this hole affect?

Even tire wear. Selecting a disc with the “wrong” center hole can result in uneven wear on the tires. Due to incorrect load distribution, the tread pattern can only wear off on one side, which ultimately affects other characteristics of the machine.
Service life of tires. How much you can travel on a new set of tires also depends on the right choice. Correctly fitted rims increase the life of your tires.
Steering wheel service life. If the car has developed a sufficiently high speed, and the DIA is selected incorrectly, then the steering wheel begins to "beat", which ultimately leads to its breakdown.
Body vibration. If at speeds above 80 km / h your car began to "shake", then, most likely, the problem lies precisely in the diameter of the center hole of the alloy wheel.

What if the center hole of the disc is larger than the diameter of the hub?

All sellers of discs recommend checking them on a car before buying, and it is advisable to drive them at least a short distance. Better yet, accelerate to 60-80 km / h to get an idea of exactly how the new wheels behave. It is difficult to put discs with a central diameter smaller than the hub diameter on a car. Can wheels with a large diameter be installed? Of course, it is best to choose the perfect hole for your vehicle. If this is not possible, then you can install the so-called universal disc, with a large center hole. To do this, you need to purchase a set of adapter rings that will compensate for the difference between the hub and the disc. Make sure that they are not damaged during the time and that they are always put back after the seasonal change of wheels. When trying on discs, do not forget to watch out for rings on the hub from previous discs.

Pros and cons of enlarging the center hole

What does the center hole affect, and will the technical parameters of the car change when it is enlarged? The positive sides of a disc with a universal center diameter include:

Availability - These drives can be found everywhere. As a rule, they are produced for a large number of brands and models, so it will not be difficult to find the right one for you.
Versatility - discs with a large center hole fit many models.
Price - since such a product is made in large batches, the price for it is slightly lower than for "exclusively" selected discs.

But not only the pluses can be encountered if you choose a disc with an increased central diameter. This choice has not very pleasant consequences:

At high speeds, due to the loose fit of the disc to the hub, the car starts to "beat". Only replacing the disks can save you from this unpleasant phenomenon.
In the worst case, if you choose the wrong disc and did not install the spacer rings, the threads on the nuts can break off the wheel. This is an extreme option, but it still happens if you neglect the safety rules.

Hub diameter for different cars

Each car has its own list of permissible wheel rim diameters. Parameters can change, usually you can find them by a sticker next to the driver's seat or from the technical specifications of the car. The variety of diameters of the central hole sometimes confuses buyers. Sometimes they differ literally by 0.1 mm. There are no uniform standards, so some manufacturers provide data more accurately, while others are less accurate. Some self-respecting disc manufacturers go further and indicate indicators not 1/20 of a millimeter, but up to as much as 10 microns, i.e. up to 0.01 mm. What are the standards for the most popular car brands?

The diameter of the central hole of the disc at "VAZ" will be 58.6 mm.
The same figure for "Audi" is 57.1 mm.
The diameter of the central hole of the disc at the "Honda" is 64.1 mm.
For BMW, the hub diameter ranges from 74.1 to 72.6 mm.
In cars of the Citroen brand, indicators also differ - you can find cars with a center hole diameter of 65.1 and 58.1 mm.
The "Fords" also have a wide range of sizes: 57.1; 63.4 and 64.1 mm.

Center hole diameter for "Niva"

Domestic cars "Niva" have rather wide hubs. The diameter of the central hole of the disc at "Niva" is approximately 98.5 mm, or 3 and 7/8 inches. What car rims can fit this car if you can't buy original ones?

Niva Chevrolet;
Volga (GAZ 31024, 29), different years of production;
or Jimni.

Renault Logan Center Hole Diameter

When choosing wheels, Renault Logan car owners often ask themselves what parameters to choose among the variety of assortment? For Renault Logan discs, the diameter of the center hole must be at least 60.1 mm. Moreover, it is better to select their radius with R14 and higher. Many rims are suitable for such conditions, which greatly simplifies the task for drivers.

When buying wheel disks, experts advise you to pay attention to the following details:

If you buy a stamped disc, be very careful when choosing parameters. Even a deviation of 0.1 mm will be critical: no adapter rings are used for steel rims, so you will not be able to ride on such wheels.
The diameter of the center hole on cast discs can be easily determined using a special formation ring. With it, you will find out the exact parameters without resorting to outside help.
If you are purchasing original discs for your car, then you will not need any adapter discs. As a rule, such a product is made exactly for the parameters of the hub bore of a car of a certain brand.