When Should I Replace My Tyres?

Why tyre condition matters so much

Your tyres are the only part of the car that actually touches the road, so their condition affects braking distance, grip in the wet, and how the car handles in an emergency. Worn or damaged tyres are also one of the most common MOT failure points we see at Sun Garage in West Bromwich.

Knowing what to look for means you can replace tyres before they become a safety risk, rather than waiting for an MOT tester or a puncture to tell you.

The legal minimum, and why it isn't the safe minimum

The legal minimum tread depth in the UK is 1.6mm across the central three-quarters of the tyre, all the way around. Below this, a tyre is illegal and will fail its MOT.

However, independent tests consistently show that stopping distances increase significantly once tread drops below about 3mm, especially in wet conditions. Many garages, including ours, recommend replacing tyres at 2-3mm rather than waiting for the legal limit.

Signs it's time for new tyres

Tread depth isn't the only thing to check. A visual inspection every few weeks can catch problems before they become dangerous.

Check your tyres for:

• Tread depth close to or below 3mm (use a 20p coin test in the main grooves)
• Cracking or perishing in the sidewall, often from age or sun exposure
• Bulges or blisters, which indicate internal damage and can burst without warning
• Uneven wear across the tyre, a sign of alignment or suspension issues
• Embedded nails, screws, or other debris
• A tyre pressure warning light that keeps returning

If you spot any of these, get the tyre checked rather than waiting for your next service or MOT.

Tyre age matters even with good tread

Rubber degrades over time regardless of mileage. A tyre with plenty of tread but sitting unused, or fitted to a car that does low annual mileage, can still be unsafe if it's old.

Uneven wear can point to a bigger problem

If one tyre is wearing faster than the others, or wearing unevenly across its width, this is often a sign of incorrect tyre pressures, worn suspension components, or wheels out of alignment. Replacing the tyre alone without addressing the cause means the new one will wear out just as quickly.

We always check the likely cause of uneven wear when fitting new tyres, so you're not paying for the same problem twice.

Tyre fitting at Sun Garage in West Bromwich

We supply and fit a wide range of tyre brands to suit different budgets, from budget options to premium makes, and we're happy to talk through what suits your driving and mileage. Every fitting includes a check of tyre pressures and a visual inspection of the wheel and brake components.

Not sure if your tyres will pass their MOT? Pop in and we'll check them for free while you wait, or call us on 0121 553 0296 to book.