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Wheel bolt patterns

OEM wheel bolt patterns & specs
Acura
Alfa Romeo
AMC/Eagle
American motors
Audi
Bentley
BMW
Buick
Cadillac
Chevrolet/GMC
Chrysler
Daiwoo
Daihatsu
Dodge
Ford
Geo
Honda
Hummer
Hyundai
Infiniti
Isuzu
Jaguar
Jeep
KIA
Land rover
Lexus
Lincoln
Mazda
Mercedes Benz
Mercury
Mini
Mitsubishi
Nissan
Oldsmobile
Plymouth
Pontiac
Porsche
Peugeot
SAAB
Saturn
Scion
Sterling
Subaru
Suzuki
Toyota
Volkswagen
Volvo
Yugo

Bolt pattern conversions
mm in
A bolt pattern or lug pattern is the diameter of a circle formed by the centers of the wheel lugs. Bolt patterns can be 4, 5, 6, or 8 lug holes. A bolt pattern of 4x100 would indicate a 4 lug pattern on a circle with a diameter of 100 mm. The bolt pattern is comprised of two numbers, the first indicates how many bolt holes are on the wheel, and the second describes how far apart they are. A bolt pattern of 5-115mm would mean the wheel has five bolt holes and they are 115mm apart (measured across the center of the wheel).

Offset

The lists of bolt patterns to the right includes OS (offset) information in the last two columns. The offset of a wheel is the distance from the mounting surface of the wheel to the true centerline of the rim. A positive offset means the mounting surface of the wheel is positioned in front of the true centerline of the rim / tire assembly. This in effect brings the tire in to the fender well more. Conversely, a negative offset means the mounting surface of the wheel is behind the true centerline of the rim / tire assembly. This will cause the tire to stick out away from the vehicle.
The bolt patterns are marked as either H, M, or L
H = High positive offset - FWD Typically +45, 40, 35 offset
M = Medium offset - RWD Typically +20 offset
L = Low offset - RWD Typically 0 offset

Dual bolt patterns


More often called "dual drilled", some manufacturers (usually cheaper ones) are building their wheels with two bolt patterns. This expands the number of fitments the wheel applies to. For example, a wheel with a 4-100/114.3 bolt pattern has 8 lug holes and will fit both 4-100mm and 4-114.3mm fitments. Without close examination, certain wheels can be mistaken for dual bolt pattern wheels, as some manufacturers will sometimes add a second set of holes only for aesthetics and weight savigs. The holes are often straight through and have no mating surface for the wheel lug nuts.

Centerbore

Centerbore relates to the center hole in the wheel that centers the wheel on the hub of the car. Since most wheels are mass produced, they have a large center bore to accommodate several different vehicles. If this is the case, it is recommended that a hub ring is used. Hub rings are hard plastic or metal ring that fits between the wheel and the vehicle. This centers the wheel perfectly on the hub ensuring that there is no run out when the wheel is installed on to the vehicle. Without hub rings it is possible to get vibrations even if the wheel / tire assembly is perfectly balanced.

Measuring bolt patterns



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amc manuals


Go to the AMC Eagle Den and sign up for the forum, then ask this question there. Great place if you want to keep your Eagle up!
Welcome to the AMC Eagle Den

Jul 10, 2014 | 1985 AMC American Motors Eagle

1 Answer

WE have a 1984 AMC eagle with 258 six engine when we move the leaver over to 4x4 it's not going in four wheel drive, and diagrams or advice would be great. Thanks. Michael


well what was told is that my1984 eagle stationwagon, that if the 4x4 does not engage it is due to vacuum lines from the motor and the trany. these lines dry out and crack and vibration causes them to crack and the tight spots there in does not let you see or fix them to easy.

Dec 05, 2010 | 1984 AMC American Motors Eagle

1 Answer

I need an AMC Eagle 1981 Belt Diagram.


Hi there,
The Gates Corporation,s website;
http://www.gates.com/index.cfm
will help you identify which belts & hoses fit your vehicle, or any vehicle as long as you know what engine is in it!
Cheers, Stevie-RayG

Aug 26, 2009 | 1983 AMC American Motors Eagle

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