I know 17x11 will fit on the rear with the right offset I just didn't know if thos 12" wide rears would fit under there. Anybody know.

18x9.5" & 19x12 C6-ZO6 Wheels

# Fits 2006 Chevy Corvette
# $1150/set, A+
# 18x9.5 Front and 19x12 Rear Chrome wheels
# 5x4.75" lug diameter
# +50mm/+59mm offset
# Center caps included
# O.E. Reproduction


http://www.lakeshorewheelandtire.com/wheels/5350-c.JPG

 

A 12" wide wheel with a 59mm offset calculates to about an 8-3/4"+ backspace. That would put the inner edge of the tire up against the LCA's and require that the inner fender liner and the subframe behind it be move over about 1/2" (mini-tubbed). You can gain a little clearance on the LCA's with a tubular LCA with rod ends and offset spacers to move them inwards in the factory mounting brackets.

This is the room available with a 7.93" backspace.... the 12" wheel would be in another 0.8".

Looking straight up from below, after hammering the inner fender liners:

http://cjcfo.fbody.com/members/injun...C/TirClr5R.jpg

Looking from behind:

http://cjcfo.fbody.com/members/injun...C/TirClr2L.jpg