Here is a simple but accurate way to measure the Bolt Pattern on your Rod.
- Remove the existing wheel (the rear wheel is usually the easiest to measure because the hub normally won’t be in the way).
- Use a ruler, or tape measure that shows 32nd’s of an inch.
- Measure from the inside of one stud to the outside of another stud (see diagram to the right) (4 lug and 6 lug use opposing studs; 5 lug use 2 studs next to each other).
- When measuring a 4 lug or 6 lug, the P.C.D. (pitch circle diameter) or bolt pattern diameter will be the distance measured.
- When measuring a 5 lug, use the distance measured then refer to the “5 Lug P.C.D. Chart. The chart shows the “Actual Dimension” in a 3 place decimal. The chart also shows the measurement to the “Nearest 32nd of an inch”.
- Find the measurement you took on the chart and that will indicate the Bolt Pattern of your vehicle.
In addition to the above measurements, it is recommended that you check both the front and rear to verify they are the same bolt pattern.
Remember, most wheel companies (and ours is one of them) will not accept returned wheels if they have had a tire mounted. Do a fit check on your vehicle to make sure the wheels fit before you have tires mounted.