I've noticed extreme tire wear on the outside tread of the right front tire at only 14K miles. Is this common, or do I have an alignment problem? They are Bridgestone Duelers on 17" rims. The outer tread rib is almost bald. 2003 V8 SR5 4WD. The dealer had an off site garage re-align the vehicle when it was new because the steering wheel was cocked when going straight.