Hey, I have 15" rims on my 4k, sometimes during cornering or going over large bumps i'll hear a harsh sqeak or a kind of clunking, has anyone else had this problem (looks like i'm gonna have to get stiffer springs eh?) Thanx, Jason. . __ __ ./\ \ /\ \ .\ \ \ \ \ \ . \ \_\ \ \_\ . \/_/ \/_/ . . __ __ . /\ \ \ \ . \ \ \________\ \ . \ \____________\ . \/____________/ .