85 grand prix lug nut size and rear spacing?

[crazyprix]

85 grand prix lug nut size and rear spacing?
thanx

 

[longhorncutlass]

Not sure about the rear spacing, but the lug nuts s/b metric, 12MM. I know my '87 Cutlass is. I think GM went to metric in 1982.

 

[khan0165]

pretty sure stock rear backspacing is 4"

 

[Blake442]

pretty sure stock rear backspacing is 4"

Nope.

For the 14x6 that most G-bodies received from the factory, it is 3".
For the 15x7 that was offered, it is 3.5".