I owna 01 blazer xtreme any one knows if I can fit 20x10.5 on the rear from a corvette, I've heared that corvette wheels fit on 4x4 blazer but i don't know about my xtreme.

 

your gonna need 2" spacers min. some people use 2 1/4" too.

 

No Corvette ever came with 20" wheels factory, I assume these are aftermarket wheels?

 

What year vette wheels are you talking about? You do realize they are different size wheels front and back? Your stock rims have 4 inches of back space. C5 rims have about 6 1/2 inches of back space. Not sure on C6 rims. C5 rims are 17X8.5 on the front and 18X9.5 on the rear. I 'believe' C6 rims are 18 up front and 19 on the rear, should be about the same width.