Help Determine: Chevy or Ford Pattern

[rzeller]

Here are my dumb questions of the week: how do I determine what lug pattern my wheel adaptors are? I am ready to replace the adaptors with drilled drums but I need to know whether my wheels are Chevy or Ford. Additionally, when measuring the lug distance do I measure from outside edge to the inside edge of the 2nd stud (not the next stud over)? Or do you measure from outside edge to center of the 2nd stud? I've seen it described both ways. Thanks for the help. Bud

[73SpeedBuggy]

Hey Bud, I found this article that I think will be useful for you. https://www.rsracing.com/tech-wheel.html

[Olli]

Great link! Lots of great info. Olli

[rzeller]

All, I want to share with you some information that Tim (tgodber) found and sent to me. This is the comprehensive measuring and pattern matching I was looking for. I hope it might be of some use to you. Thanks Tim. Bud HOW TO MEASURE YOUR BOLT PATTERN 4-LUG Measure center to center of two holes directly across from each other. 5-LUG Measure from the center on one hole to the BACK of the third hole. This is the easiest way to estimate a 5-lug bolt circle. 6-LUG Measure center to center of two holes directly across from each other. 8-LUG Measure center to center of two holes directly across from each other. A 5 on 4.5" 1/2" Older Full size Ford & Chrysler Products B 5 on 4.75" 7/16" Chevy Camero & Most Older Full Size Chevrolet C 5 on 5" 5/8" Grand National & Most Older Full-Size GM Cars D 5 on 5.5" 1/2" 1/2 Ton Ford Pickups, Most Jeeps, & International Scouts E 6 on 5.5" 7/16" Older Model Chevy & GM Pickups & Some Late Blazer & Datsun F 8 on 6.5" 1/2" All 8 Hole 3/4 Ton Trucks G 5 on 7.75" 5/8" Old Wide 5 Hole Volkswagen H 5 on 10.25" 5/8" Modified 37 Ford, Skeleton or Wide 5 Pattern I 6 on 5" 6-Pin Sprint Car 5/8 Drive Pin J 6 on 5" 6-Pin Midget 1/2" Drive Pin K 4 on 98mm Fiat L 4 on 100mm Chevy Chevette, Plymouth K-Car, Isuzu Pup, & Renault M 5 on 100mm All GM A, J, & X Body Front Wheel Drive and some Mopar N 4 on 4" Vega & GM '80 & Older Skyhawk, Starfire, Astro & Sunbird O 5 on 4" Plymouth Duster, Scamp, Valiant, Dodge, & "A" Body Mopar P* 4 on 4.25" Pinto, Some T-Birds, Other Ford Small Cars, & Some Porsche Q 4 on 110mm Some Renault & Mazdas R* 4 on 4.5" Older Mustangs & Capri 6 Cyl, Some Datsun, MG, Mazda & Toyota S 4 on 120mm Some Mazda & Honda T 4 on 130mm Volkswagen & Some Porsche U 4 on 140mm Subaru V 6 on 8.75" Military Pull Truck W 6 on 7.25" Military Pull Truck X 6 on 8" Military Pull Truck AE 5 on 6.5" Land Rover *Multi- Lug