WHAT'S LEGAL?

The condition of your tyres is crucial to passing your MOT and random spot checks by the police. The tyre fitted to your vehicle needs to meet the following criteria:

The tread depth should be at least 1.6mm throughout a continuous band comprising;
- The central three-quarters of the tread (see diagram) and
- Round the entire outer circumference of the tyre
A cut should not exceed 25mm or 10% of the section width, whichever is greater, deep enough to reach the ply or cords of the tyre.
A tyre should not have a lump, bulge or tear caused by separation or partial failure of it's structure. This includes any lifting of the tread rubber
The tyre must be correctly seated on the wheel rim.
A seriously damaged or misaligned valve stem, could cause sudden deflation of the tyre.