Caster: This is adjusted either by mechanical ... When having new tires installed, at the very least have the wheel alignment checked. If it's out, have the vehicle realigned or pay the price ...
Depending on the vehicle, proper wheel alignment involves setting the camber (inward or outward tilt of the wheels when looking head on), caster (wheel tilt front or back looking from the side ...
After completing the analysis, the technician places the vehicle on an alignment rack and mounts targets to the wheel ends.