Wheel Alignment

The main angles are toe, camber and caster. They are measured on an alignment rig and compared with the manufacturer's values. On many cars only toe can be adjusted; other angles change only if parts are bent or worn.

The technician measures each wheel with cameras or sensors and adjusts the tie rods and other adjusters until the values are within limits.

Wrong alignment makes the car pull, leaves the steering wheel off-centre and wears tyres quickly. Check it after hitting a kerb or replacing steering parts.