Editing How to run Ford wheels on a Chevy wheel pattern (section)

==Identifying wheel bolt patterns== The bolt circle diameter is sometimes referred to as '''PCD''' ('''P'''itch '''C'''ircle '''D'''iameter). It may be measured in mm but many people are more familiar with the US inch standard measurement used previously. To convert mm to inches, a [http://www.convertunits.com/from/mm/to/inches calculator] can be used, or simply multiply mm by '''0.03937''', i.e. 120.65mm x 0.03937 = 4.7499" (rounded to 4 3/4" or 4.75"). For slightly better accuracy (really not needed in this case), divide mm by '''25.4'''. In everyday language you would say, "My rim has a 5 on 4 3/4" wheel pattern", meaning that the rim has five bolts or studs and an imaginary circle of 4.75" is formed by the lug pattern.

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