What is the correct way to measure my bolt circle for my wheels?
It depends on the stud count of your bolt circle. If it is a 4 or 6 lug then you measure from the center of the 12 o’clock position stud to the center of the 6 o’clock position stud. This will give you your bolt circle. If it is a 5 lug then a little math is involved. The simplest way is to measure from the center of the 1st stud skipping the 2nd stud and going to the center of the 3rd. You will then add a 1/4 inch to this and it will give you the bolt pattern. For example if the 1st to 3rd length going center of stud to center of stud is 4 1/2 inches you would then add 1/4 inch to this for 4.5 + .25 = 4.75 or 4 3/4 Chevy pattern. A typlical Ford 5 lug would measure 1st to 3rd at 4.25 inches so 4.25+.25= 4.5 or 4 1/2 Ford pattern. Measuring center of 1st to outside of 3rd doesn’t always work especially with a larger stud diameter like 5/8″ studs.
