Incorrect wheel base, no apparent physical damage, problem has been since purchase. it cause brakes to grab/chatter, steering to lock on braking and extreme pulling in either direction. in addition to uneven tire wear. nearly hit a telephone pole head-on when steering locked on braking and on another occasion nearly avoided hitting a car as braking system doesn't stop vehicle correctly (not abs related-brakes grab/release/grab unevenly allowing vehicle to continue forward)*jb