I am going to get some Z06 Motorsports tomorrow for my camaro in a 17x9.5. They are offered in +38mm and +56mm offsets. Which one is the correct offset for my car?

 

38 mm. Thats what offset my Fikses on the Berger are. Fill the wheel wells nicely.

 

38mm is the early corvette offset. The front rub just a little backing up and turning just right. (atleast on my car 99Z) The rear are fine. They seat about an 1" farther out or so. I think they look better set out a little more. The 56mm is the "correct" offset. I would think about getting 56 frt and 38 rr. Can't rotate tires then, that's why I didn't. Thinking about DR for the back now so no tire rotation anyway.

your current rims are 56mm's 7X9's