Measuring Wheel Bolt Patterns
 

The bolt pattern is comprised of two numbers - the first indicates how many bolt holes are on the wheel, and the other 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).

 5 lug

Dual Bolt Pattern:

More and more manufacturers 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.

Measuring your Bolt Pattern:
Measuring the 4, 6 and 8-bolt patterns:

They are measured from the center of one lug hole to the center of the opposite hole.

Bolt measurement examples:

 4 lug   6 lug 8 lug

Measuring a 5-bolt pattern:

A 5-bolt pattern is very difficult to measure without using a bolt pattern gauge. Basically, you would measure the diameter of a circle that crosses through the center of the lug holes. This method is not recommended to confirm wheel fitment.

Bolt measurement example:

 5 lug

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Updated 01/18/08 04:58:04 AM