Hey, fellas I just joined 10 minutes ago, and this is just the topic I've been looking for. I bought my rims from Motorsportauto, 16x8 primax a while back, still in the box because of this topic right here. The rims are already offset for the Z car. my dilemma is having a tire shop scuffing them up trying to find the right tire. I'm not into trial and error even though it is sometimes necessay. my car is lowered '71 240. 5 way adjustable tokico Illumina coils and shocks, urethane bushings,upgraded sway bars you know the drill. My mechanic thinks 225/40 if that is the case it would be all the way around the more road contact the better. See Gtr vs corvette on YouTube. Gtr ran same size tires all the way around. any feedback would be great from what I've read, there still seems to be some uncertainty and rubbing issues.