Interesting....I have 285/75/16 Goodyears (33") with that very aggressive thread design. It kinda looks like that RC Vehicross with the really big tires. I have not lifted or modified anything except had to do a little trimming in the front of wheel well and just had to hit one screw with a 16 ounce hammmer to move the screw back about 1/16 of an inch to get the tires to fit. However, my 912 just arrive and I look forward to putting them on.