I have a 95 Cadillac STS on 20' Dayton Wires, however anytime someone is in the back seat it rubs and it chipping the tread off my back tires http://www.cadillacforum.com/image/s10.gif. Know anywhere i could get a lift or recommend a smaller tire size..... Thx

what size tire is on there now?

ON THE BACK IS 235 R35 R20, FRONT : 245 R45 R20, BOUGHT IT LIKE THIS, SHOULD I ADJUST THE TIRE SIZE ......

try switching up the back and the front and see what happens, or just get 35 profile tires all around like you have in the back, i don't know why they would have 45 in the front and 35 in back

OKAY i have a 97deville got the same problem but its with 22's and tire size 255-30-22. i know i need to raise it but will switching the air compressor out with a after market one be sufficient or, will i just have to get a two inch lift>?