Worn tread, cracked sidewalls, vibration and slow punctures are all red flags. Discover the seven signs that mean your tyres need replacing before they put you at risk.
Your tyres are the only contact point between your car and the road. When they're in poor condition, stopping distances increase dramatically and the risk of a blowout rises with every mile. Here are the seven signs that your tyres need replacing — don't ignore any of them.
1. Tread Depth Below 3mm
The UK legal minimum is 1.6mm, but tyre performance starts deteriorating significantly below 3mm — especially in wet conditions. Use a tread depth gauge (or the 20p coin test) regularly. If the outer rim of the coin is visible, it's time to replace.
2. Cracked or Bulging Sidewalls
Cracks in the sidewall indicate the rubber compound is degrading. Bulges are even more serious — they signal internal structural damage and can lead to a sudden blowout. Either means immediate replacement.
3. Persistent Vibration While Driving
Vibration through the steering wheel or seat at motorway speed often points to unbalanced wheels, but can also indicate internal tyre damage or separated belts. Have the tyres inspected as soon as possible.
4. Slow or Recurring Punctures
If a tyre keeps losing pressure even after being repaired, the internal structure may be compromised. Repeated repairs in the same area or near the sidewall mean replacement is the only safe option.
5. Uneven Tread Wear
Wear on one side indicates misalignment. Wear in the centre points to over-inflation. Wear on both edges suggests chronic under-inflation. All three indicate a tyre that may be dangerously degraded even if average depth looks acceptable.
6. Tyres Over 5 Years Old
Rubber degrades over time regardless of mileage. Most manufacturers recommend replacing tyres after 5 years, even if tread looks fine. Check the DOT code on the sidewall — the last four digits are the week and year of manufacture.
7. TPMS Warning Light
Your Tyre Pressure Monitoring System light illuminating doesn't always mean a new tyre is needed, but it demands immediate attention. Under-inflated tyres generate excess heat and can fail without warning.
If you spot any of these warning signs, book a mobile tyre inspection today. Our fitters come to you and assess the situation — no garage visit required.
