Good Tyres Are Vital!
Tyres are the vehicle’s only point of contact with the road. The actual area of contact between the car and the road through the tyres is small, roughly equivalent to four size eight men’s shoes. Bald tyres – ‘slicks’ – may be fine for a race car on a dry track, but no good at all for road vehicles on a wet road surface
Tyres treads are designed to pump water from the road surface and provide maximum grip. By the time the tread is worn down to the legal limit they will be unable to perform this task efficiently and MUST be replaced.
A damaged tyre can rupture during operation
If you drive with materials such as stone in the tread groove, or with a nail stuck in the tyre, the tyre can become punctured or ruptured. You should change the tyre immediately on discovering any damage to avoid any further damage to the carcass.
RoSPA recommends that worn tyres are replaced with an equivalent new unit well before the legal minimum tread limit of 1.6mm is reached – ideally as soon as they reach 3mm.

A tyre is a wearing part that will need replacement after a period of time. When the groove depth reaches 1.6mm you are required by law to replace the tyres. It is advisable to replace them before they have reached this limit, to benefit from deeper tread in adverse conditions

Tyre wear differs depending on the position where the tyre is located, so to extend the life of your tyres it is important that you change their positions on a regular basis. Different tyre manufacturers may recommend different rotation periods, though as a general rule you should rotate them every 2000 – 3000 miles (approximately 3,000 – 5,000 km.)