so i bought c5 rims and the backs are 10.5" with a 285. when i went to put them on they were hitting the suspention bumper. i had to prelaod the suspention to make them work. sould i just cut off the bumper because if i hit a bump and my suspention raises it will hit. but if i bottom out without a bumper then it pretty much speaks for itself. input? has anyone dealt with this prob? let me know.