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R

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Discussion Starter #1
I would also like to know what the correct backspacing is. I'm looking for a new set of rims and need this info.
 
T

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Discussion Starter #2
5 bolt rim....4 3/4 inch bolt circle. Measure your backspacing by placing wheel face down on the ground. Get a straight edge that just fits between the outermost flanges of the tire bead. DO NOT touch the tire. Now take a tape measure and measure the distance from the mounting surface of the wheel to the bottom edge of your straight edge. That's your backspacing. It's easier to go with a deeper backspacing and get a wider wheel than keeping the same backspacing as stock and then buying a wider wheel.
 
J
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Discussion Starter #3
I think he wants the bolt pattern and not instructions on tightening lug nuts.

The bolt pattern is GM big car-same as GM light trucks up to 1/2 ton (prior to metric series)

It is a 5 lug on 5 inch pattern with 1/2 studs-larger compared to say the GM intermediate pattern for Chevelles, GTOs Camaros, Firebirds etc of 5 lug on 4-3/4" with 7/16 " studs.

I can't help on backspacing-you need to measure....go to Car Carft or Hot Rod.com or similar and get instructions on measuring backspacing-also available on some wheel mfgr websites.
 
O

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A star pattern. or you will warp it. And just snug them all first before tightening.
 
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