How Often Should You Replace Your Tyres?

Many drivers only think about replacing their tyres when the tread wears out. But tread depth is just one of several factors that determine whether a tyre is safe to drive on. Age, sidewall condition, impact damage and exposure to the elements all matter too — sometimes more than tread.

This guide explains how often you should replace your tyres, how to spot the warning signs, and how to decide when new rubber is the right call. If you would like a professional opinion, our mobile tyre fitting team inspects tyres at your home or workplace across Essex, Hertfordshire and Cambridgeshire — call 01279 881234.

Tread Wear

The most obvious reason to replace a tyre is worn tread. The legal minimum in the UK is 1.6mm, but the safety recommendation is to change at 3mm because wet-weather stopping distances rise sharply below that point. See our tread depth guide for how to measure it.

Check your tread monthly. Front tyres on front-wheel-drive cars typically wear faster than rears because they carry the engine weight, do the steering, and transmit the power. Rotating your tyres every 6,000–8,000 miles can help even out wear and extend the life of the set.

Tyre Age

Even with plenty of tread left, tyres degrade over time. Heat, UV light and ozone slowly break down the rubber compounds, making the tyre harder and less grippy and increasing the risk of a blowout.

• Most manufacturers recommend replacing tyres older than 10 years regardless of tread
• After 5 years, have your tyres inspected annually by a professional
• Caravans, trailers and classic cars that do low mileage are particularly prone to age-related failure

To find the age of a tyre, look for the 4-digit DOT code on the sidewall. "2319" means the tyre was made in week 23 of 2019. Our tyre age guide explains this in detail.

Sidewall Cracking

Small cracks in the sidewall — known as crazing — are a sign that the rubber is perishing. Fine surface cracks may be cosmetic, but deeper cracks that reach into the structure mean the tyre is unsafe and should be replaced immediately. Cracking is most common on older tyres and on vehicles that stand unused for long periods.

Impact Damage

Hitting a pothole, kerb or debris can cause internal damage that is not visible from the outside. The internal belts can break or shift, causing bulges, vibration or a sudden failure later. If your steering feels off, the car vibrates at speed, or you notice a bulge on the sidewall after an impact, have the tyre checked. See our pothole damage guide.

Signs You Need New Tyres

Bring these symptoms together and you have a clear checklist for when to replace:

• Tread depth at or below 3mm
• Tyres more than 10 years old (or 5+ years and never inspected)
• Visible sidewall cracking or crazing
• A bulge, cut or lump anywhere on the tyre
• Vibration or pulling that appeared after an impact
• A persistent slow puncture that keeps returning

Mixing Old and New Tyres

It is generally best to replace tyres in axle pairs rather than singly, so handling and braking stay balanced. New tyres should usually go on the rear axle, regardless of whether the car is front- or rear-wheel drive, because rear grip is harder to feel and a loss of rear grip is harder to recover from. Never mix radial and cross-ply tyres on the same axle, and never mix tyre sizes.

Get a Professional Opinion

If you are unsure about the condition of your tyres, do not guess. Call us and we'll come to you for a free inspection covering condition, tread, age and pressure. If replacement is needed, we carry most major brands and budget options on the van. Call 01279 881234 or see our all locations page to check we cover your area.