a and c auto repairs ltd


The law requires car tyres to have a minimum tread depth of 1.6mm in a continuous band around the central three quarters of the tyre. To help you judge how much tread you have on your car tyres, manufacturers often mould tread bars at roughly 1.6mm.

Picture of new tyre
Tread depth indicator
Picture of illegal Tyre
This tyre is very close to being - or has
just become - illegal

If you can see these bars your tyres are about to become illegal and unsafe. However, for optimum safety, most manufacturers recommend that your tyres are changed at 3mm.

Quite often tyres will need to be replaced before the manufacturers recommended life of the tyre, this is due to;

Under-inflation - causes rapid wear to the sides of the tyre

Over-inflation - causes rapid wear down the centre of the tyre

Poor or faulty brakes and worn shock absorbers - may cause flat spots around the tyre

Incorrect alignment or tracking - can cause wear along the inside or outside of the front tyres, just by hitting a pot hole may cause the tracking to misalign and that's why its recommended to have your alignment checked every 6,000 miles.

Did you know that almost 20% of cars have illegal tyres? Illegal tyres can cost you a 2,500 fine and 3 penalty points each.
Incorrect tyre pressures can reduce your tyre life by up to 25% and increase your car's fuel consumption by as much as 5%.


Unit 13 Wheatear Industrial Estate,
Off Perry Road, Witham, Essex CM8 3YY


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