9.3 - Wheel Alignment ( ,  )

This is a frequent source of problems on the Jaguar, as the correct factory procedure for tracking alignment requires that the suspension is pre-loaded ( ie. Tied down with a known force ) before the adjustment is made. Few garages are aware of this and therefore almost always set excessive toe-out.

Excessive toe-out produces vague steering, tramlining and excessive wear on the inside edges of the front tyres. By contrast, toe-in causes wear on the outer edges of the tyres and produces a stronger self-centring effect on the steering.

It is possible to adjust the tracking yourself, but be aware that getting it wrong is expensive on tyres and can greatly impair handling. Also be aware that wear in other suspension components may produce similar symptoms.

Lift the front of the car and locate the tie rods leading from the rear of the front hub assembly to the steering rack. The rods are threaded such that turning them clockwise effectively shortens them, moving the rear of the wheels closer together therefore producing toe-out. Turning anticlockwise produces toe-in.

Use a spanner to hold the rod in position whilst undoing the lock nut. Turn the rod as necessary then retighten the lock nut. Experience suggests that a typical excessive toe-out can be corrected by turning the track rod anticlockwise by one to two flats, but be aware this may not work for you.