Centre Wear on Tyres: What It Tells You

Centre wear is the mirror image of shoulder wear, and it has an equally clear message: your tyres are running too hard. When the middle of the tread is worn smooth while the inner and outer shoulders still look fresh, the contact patch has narrowed to a strip down the centre. Here’s what causes it on Australian cars, how to confirm it, and the simple fix.

What does centre wear look like?

Look and feel across the tread from shoulder to shoulder. Centre wear shows as a worn band down the middle of the tyre — lower tread depth in the centre grooves, with the wear indicators surfacing there first — while both shoulders still carry decent tread. It usually appears evenly across all four tyres if pressure is the cause, because you tend to over-inflate the whole set at once.

What causes centre wear on tyres?

The tread is designed to sit flat when the tyre runs at the correct pressure. Put too much air in and the tread crowns outward, so the centre carries the car and the shoulders lift slightly off the road:

Cause	What’s happening	Typical fix
Overinflation	Excess pressure bows the tread so only the centre contacts the road	Set to placard pressure, cold
Following the sidewall maximum	The sidewall number is a maximum, not a recommendation — it over-inflates most cars	Use the placard, not the sidewall max
High-power RWD wheelspin	Repeated wheelspin scrubs the centre of the driven tyres	Traction/driving style; correct pressure
Fitting a wider tyre than the rim suits	Contact patch can crown in the middle	Correct rim/tyre match

Overinflation is by far the most common cause. Bridgestone Australia is blunt about the fix: “always use the recommended tyre pressure for your vehicle rather than the maximum pressure shown on the tyre sidewall,” with most passenger cars sitting between 30–36 psi. For the full picture, see what happens if you overinflate your tyres.

Is centre wear always overinflation?

Nearly always, if it’s even across the set. The main exception is a powerful rear-wheel-drive car whose driven tyres see a lot of wheelspin — that can scrub the centres of the rear tyres specifically, not all four. If your centre wear is only on the driven wheels of a high-torque RWD car and pressures are correct, driving style is the factor. Otherwise, assume pressure.

How do I confirm it’s overinflation?

Check pressures when the tyres are cold — Bridgestone Australia defines cold as parked at least three hours or driven under 2km at a moderate speed — and compare against the tyre placard on the driver’s door jamb or fuel flap. Hot tyres read higher (roughly 20–50 kPa / 3–7 psi above cold), so don’t bleed air from a hot tyre to “correct” it or you’ll end up underinflated. If the cold reading is well above placard, that’s your answer.

How does centre wear compare to other patterns?

It’s the opposite of underinflation. Overinflation wears the centre; underinflation wears both shoulders (see inside-edge and outside-edge wear for single-shoulder alignment problems). A quick rule: even wear on both edges is pressure, wear on one edge is alignment, wear down the middle is overinflation. The full guide is how to read wear patterns like a mechanic.

Why overinflation is worse than it looks

Beyond the wasted tread, a narrowed contact patch means less grip, longer braking distances and a harsher ride — the opposite of what people expect when they “pump them up hard for the freeway.” It also makes the tyre more vulnerable to impact damage from potholes and kerbs. The centre also reaches the legal limit first: Australia’s minimum is 1.5mm in all principal grooves, so a worn centre can make the tyre illegal and fail an inspection while the shoulders still look new (see the 1.5mm rule).

How do I fix and prevent centre wear?

Reset every tyre to the placard pressure, cold, and check monthly and before long trips (see how often to check pressures). Ignore the sidewall maximum. If you’ve been running high pressures for economy, know that the fuel saving is tiny and the grip and wear penalty isn’t worth it. Rotate your tyres on schedule, and if you drive a high-power RWD car, ease off the wheelspin.

Bottom line: Centre wear means too much air — the tread is crowning and only the middle is doing the work. Drop to placard pressure set cold, forget the sidewall maximum, and the wear stops. Only a hard-driven RWD car is likely to wear its centres for any other reason.

Frequently asked questions

What causes a tyre to wear in the middle?

Overinflation. Too much pressure bows the tread outward so only the centre touches the road and wears, while the shoulders keep their tread.

How much pressure is too much?

Anything meaningfully above your car’s placard figure. Most Australian passenger cars sit around 30–36 psi cold; the sidewall number is a maximum, not a target.

Can I still drive on a tyre with centre wear?

Only if the centre grooves are still above 1.5mm. Once the centre drops below that the tyre is illegal in Australia, even if the shoulders look fine.

Does high tyre pressure really save fuel?

The saving from over-inflating beyond placard is very small and comes at the cost of grip, braking, ride comfort and centre wear. It isn’t worth it.

Why do only my rear tyres have centre wear?

On a powerful rear-wheel-drive car, wheelspin can scrub the centre of the driven rear tyres. If pressures are correct, driving style is the likely cause.

External references: Bridgestone Australia — Tyre Pressure Guide and JAX Tyres & Auto — Tyre Pressure Guide.

Figures and rules change — confirm tread limits with your state road authority and pressures against your vehicle placard.