I have a 99 camaro and I was woundering what the lug's are on it. I mean I know it's a 5 lug wheel but I was woundering what the stud diameter and backspacing is on a 99 camaro

 

Kinda confused about what your saying. Don't have the specs for a 99 but this might help and you can do it yourself. The lug separation all you have to do is get a ruler and measure from one nut to another. for backspacing, in the back of the rim, measure from the inside part of the rim to the edge of the back. It'll be easier to just lay the rim flat on its face.

 

I think the bolt pattern is 5 lug 4 3/4 " bolt circle. I know Ford and Morar are 5 bolt 4 1/2" bolt circle except on darts and early Valiants and barracuda's which are 5 on a 4.00" bolt circle.