It is critical that all four wheels of your car are correctly aligned to the manufacturers' measurements. If one wheel is out of alignment by just one millimeter it can affect the handling of the vehicle, fuel consumption and tyre wear.

With all the trafic calming ramps, bumps, and potholes on the road, it doesn't take a lot to knock a wheel out of alignment. Even just kerbing your wheels can knock their alignment out by a millimetre.

Wheel alignment is not only important for prolonging the life of your tyres. If your front wheels are pointing in slightly different directions your car may have a tendency to 'wander' across the road, especially at higher speeds.

On modern cars rear wheels can also go out of alignment because of the independent suspension on most new cars.

A bit more information can be found here.

Please note that the M.O.T. Test Certificate relates only to the condition of the testable items at the time of the test. It is not evidence of their condition at any other time, nor of the general mechanical condition of the vehicle.It is an offence to operate a vehicle on the roads without a valid M.O.T. Certificate - Check Yours Now