I have a 2003 Silverado and installed some wheel adapters on it. The truck has a 6x5.50 bolt pattern and the adapters convert it to a 5x4.75 bolt pattern. The adapters are 2.00" thick. I ran some C6 Motorsports that where IIRC 18x8.5 front and 19x10 rear that were intented for use in C5 and C6 (non C6 Z06) Vettes but I didnt know what offset they were and I already sold them to a C5 owner. Can someone please tell me what offset they had, assuming they fit C5 and C6 Vettes with no modifications and with no rubbing? On my truck they fit perfect. They didnt stick out at all but I just had to roll the fender lips a bit on the rear.
I am trying to find out what offset I need if the "factory C6 Vette" offset worked perfect on my truck. But the wheels I am trying to get now are the C6 Z06 19X9.5 for the front and 20x11 for the rear, one inch bigger for the front and rear than what I had before. What offset would work best for both front and rear? The sizes I found were, 19x9.5 +57 MM FRONT OFFSET & 20x11 +79 MM REAR OFFSET. Would those work?

http://cgi.ebay.com/ebaymotors/C6-CO...mZ180207222161









*The tires in the pics are too small, I know.