mattsc

I wanted late model z06 front wheels for the track and bought two whitch were supposed to be Z06 10" wide wheels .They just got here and the markings say 9.5 " and + 40
So the question is, are these wheels real G.m Zo6 front wheels?
Thanks...

gkmccready

C5Z front wheels are 17x9.5 and rear wheels are 18x10.5.
C6Z front wheels are 18x9.5 and rear wheels are 19x12.

Sounds like you got C6Z front wheels. They're 18x9.5 +40...

mattsc

Thanks for the reply bro...

UstaB-GS549

Not sure about C6, but C5 wheels have markings on the back side of each spoke:

17x9.5Jx54
Speedline
9594808
GM
SL1731

18x10.5Jx58
Speedline
9594810
GM
SL1732

If it is a factory wheel it should have GM on it somewhere.