Unbalanced tyres cause vibration, which can lead to driver fatigue and premature, irregular tyre wear, as well as unnecessary wear to your vehicle's suspension. Your tyres should be balanced when they are mounted on wheels for the first time or when they are remounted after repair. Tyre balance should be checked at the first sign of a vibration or shimmy.
Balance weights are the weights fitted to the wheel rim in order to balance out any heavy spots found in the tyre/wheel assembly. Previously made from lead they are normally made now from an alloy.
There are various types of balance weights to suit different wheels - standard, slim line, stick-on etc. Stick on weights have the advantage of being able to be fitted to the inner face of the rim out of sight from the front to enhance the appearance of the assembly