hey guy's need some info on 15" rims . i'm going to put 35 x 12.50 or 14.5 x 15 tires on my truck 97 ram 1500 suspension is taken care of . i need some backspace numbers . and i am putting bushwacker extend-a-fender flares on it so i need to fill them up . here's a rim size i've looked at not sure 15" x 10" 5" x 5.5" bolt pattern with 3.75 backspace