Lexusnex

Rotor vibrations, when brakes are applied, are often caused by the lug nuts being over-torqued when the tires are installed using an impact wrench. This warps the rotors. You can try loosening the lugs and manually retorque them to the manufacturer's recommendation, probably around 90 lbs. Sometimes the damage is done and the rotors must be turned at a machine shop to smooth them out before reinstalling them. Very seldom do the brake rotors get too thin unless the brakes pads are totally shot and the brakes are putting metal to metal on the rotor. This is, of course, very noticeable to the ear, and the rotors would be destroyed as a result.

How do I adjust the headlight beam (vertical and horizontal) on a 2008 RX350?