By Ako Katka, AK Mobile Tyres • 2025-03-22 • 560-word guide
Tyres are the only part of your car that touches the road, yet many drivers don't replace them until it's too late. Worn tyres are a leading cause of road accidents in the UK. Here's how to know when it's time for new tyres.
UK law requires a minimum tread depth of 1.6mm across the central three-quarters of the tyre. Driving on tyres below this limit is illegal and can result in a £2,500 fine and 3 penalty points per tyre. Most tyre manufacturers recommend replacing at 3mm for improved wet-weather safety.
Check using a 20p coin: insert it into the tread groove. If you can see the outer band of the coin, your tread is below 3mm and needs attention soon.
Sidewall damage — including cracks, cuts, or bulges — means the structural integrity of the tyre is compromised. A bulge indicates the inner structure has failed and the tyre could blow out at any moment. Do not drive on a tyre with a sidewall bulge.
Some vibration is normal on imperfect roads, but persistent vibration — especially at motorway speeds — can indicate an unbalanced tyre, internal damage, or a deformed belt inside the tyre. Have it checked immediately.
Rubber degrades over time regardless of mileage. Even tyres with good tread depth can become brittle and crack if they're old. Most manufacturers recommend replacing tyres after 5–6 years of use. The manufacture date is on the sidewall as a 4-digit code (e.g. "2319" means week 23 of 2019).
If your tyre is wearing unevenly — more in the centre, on both edges, or on one edge only — this indicates a problem beyond just the tyre. It could be over/under-inflation, poor wheel alignment, or worn suspension components. The underlying issue needs fixing alongside a tyre replacement.
If you're regularly having to inflate a specific tyre, it likely has a slow puncture — either from a nail, a leaking valve, or rim damage. A slow puncture that cannot be safely repaired means a new tyre is needed.
There's no fixed mileage — it depends on driving style, load, and road conditions. Check tread depth monthly and inspect for damage. Most car tyres last 20,000–40,000 miles.
Yes, but it's recommended to replace tyres in pairs on the same axle to maintain balanced handling. If one front tyre is replaced, consider checking whether the other front tyre needs replacing too.
Up to £2,500 and 3 penalty points per tyre. With four illegal tyres, you could face a £10,000 fine and 12 penalty points — potentially losing your licence.
Yes — call 07549 328819 and we can do a free tyre inspection at your location in Hayes or surrounding West London areas.
AK Tyres covers Hayes, West London and surrounding areas 24/7. We come to you — home, work, or roadside.
📞 Call 07549 328819What's the legal minimum and how to check your tread depth.
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