Ok I know that these questions are asked all the time and I have searched and have not been able to find a definate answer to my questions. I am buying new wheels so that I can have more tire options. I am going with 16x8 rear and 16x7 front.should I get 4" or 5" bacspacing? I was thinking 4" on the front and 5" int the rear? also what is the biggest street drag radial I can get on the rear with these wheel sizes? any help would be greatly appreciated.