Find out what the legal requirements are for your vehicle's tyres.
The UK law states that a tyre must be 'fit for purpose'
This means tyre must;
- Be compatible with the types of tyres fitted to the other wheels, not have any lump, bulge or tear caused by separation or partial failure of the structure.
- Not have a cut or tear in excess of 25mm or 10% of the width of the tyre, whichever is the greater, and which is deep enough to reach the ply or cord.
- Not have any part of the ply or cord exposed.
- Have a minimum legal tread depth of 1.6 mm, and be showing 75% of tread pattern which must be central to the tyre as below
A vehicle with any of these faults, or with tyres of different nominal size or aspect ratio on the same axle, is liable to fail an MOT test.
You can take a rough measurement of tread depth with a 20p coin*
- Place 20p in the tyre tread.
- Look at the coin with your eyes level to the tyre's surface.
- If the border of the coin is in full view - the tyre is illegal
* This method is not an exact method of measurement
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