I have a new set of cut out flares for 88-98 trucks, thinking bout using em on my 2000 CCSB that's SAS'd. According to Bushwackers install directions, says you can run a 33" on a 8" wheel with no trimming the bumper, and no lift. A 35" tire on 10" trimming the bumper. What I'm looking for is how big a tire with a lift? If 35s will fit with no lift, than a 4" or 6" should fit a 38" then right?? Thinking of going 38.5s, and the fenders are crusty under the stock flares anyway.