If I got like 12 inch wheels in the back of a Z28 and didn't want them to stick out, and I wanted them to 'stick in' how would I go about doing that?? Like move the wheels/tires closer to the diff. See what I'm saying? Thanks!

 

Biggest I've heard of anyone doing is 11" Wheels. Here's a couple of links.

http://u2.netgate.net/~jshapiro/z28/315s/index.html

http://www.afswheels.com

 

In order to get your wheels and tires in closer to the center of the car your looking to either narrow the rearend housing or you could try getting a rim with a larger bag spacing. I have told that the largest rim you can get under a car without cutting the wheel well put will require some hammering to the inside of the wheel well will either be select rims such as Fikse has a 17x11 with a large back space that fits or drag wheel will be 15x10 with a 7.5 back space. Anything larger you will have to mini tube the stock tubs. I just redid my whole chassis from the firewall back and I run a 31x16.5x15 MT ET Street but I also changed alot of items to do this. My rims on the rear are a 15x12 Weld Aluma Star.

Good Luck