im going to be running a 15x8 wheel in the rear with anywhere from a 8-10" wide tire but i want my tires to stick out like an inch in the rear off the fender, i know generally people dont like this, ive seen a camaro with all 4 tires out liek this and it was bad but in mm&ff a 89 5.0 had his rears out and it looked very good

 

U think your goin to want 5.5 for the 15x8 and the 6.5 with the 15x10 wheels