i am lowered and have smaller tires upfront and rarely have an issue... only some tall speed bumps hit... and most of those have a cut in the middle between lanes where i drive down the center to not hit. there is a thread around here that gives demensions on a jig where you can cut them and fix it all while adding a new flex. if i were to do it again i would put a better flex in mine and remove about 1" from the rear section to raise up the exhaust.