When should you replace tyres?
Although the legal limit for tyre tread depth is 1.6mm, many safety organisations and tyre makers recommend replacing tyres when the tread reaches 3mm, because their effectiveness – in particular, their ability to stop a car on a wet surface – is reduced once the tread is below this level. they must also have the minimum tread across threequarters of their width, without any gaps in it.
The other legal requirements for tyres are that they are in physically good condition – they can’t have any gashes or bulges in the sidewalls – and that they’re in ated to the recommended pressures.the tyres also have to be the same size across both axles, although you can t larger tyres on the back or front axle of your car.
Fall foul of any of these rules and you could get three penalty points on your licence and a £2500 ne.you could lose your licence altogether and be ned £10,000 if all four tyres are below the legal limit.
Although there’s no legal requirement to stick with the brand of tyre tted to your car when it was new, the car maker will have worked closely with the tyre company during the car’s development, so changing to a different brand or tyre with a different tread pattern could affect the car’s handling and road noise. However, if you stick with a similar tyre from a different premium or mid-range brand, the differences should be minimal.
One thing you should consider doing, however, is changing the two front or rear tyres at the same time, unless you’re replacing a new tyre that’s been damaged. If you change a single tyre and the new one has 8mm of tread and the one on the other side has 4mm, they won’t provide the same grip. while this isn’t likely to be an issue on dry roads, in wet, wintery conditions the stopping distances will increase.
You might be able to save money by looking for retailers that offer a discount for buying more than one tyre.