Wear, Damage and Diagnosis

Centre wear on tyres almost always means overinflation — the contact patch has narrowed to the middle. Here’s what it tells you and how to fix it in Australia.

Cupping and scalloping — scooped, wavy tyre wear — usually means worn shocks, unbalanced wheels or misalignment. How to diagnose and fix it in Australia.

Feathering makes tyre tread ribs sharp on one side and smooth on the other. Here’s what causes the sawtooth wear and how to fix it in Australia.

A sidewall bubble means broken internal cords and a real blowout risk. Here’s why it can’t be repaired, what causes it, and what Australian drivers should do.

Found a nail in your tyre? Whether it’s repairable depends on where it is and how big it is. Here’s the Australian repair rule, and when you must replace.

In Australia a tyre can only be repaired in the central tread (crown) area. Here’s the repairable zone, the 6mm rule, AS 1973 and what makes a tyre a replace.

A tyre losing a few psi a week? Here’s how to diagnose a slow puncture — soapy water test, valve checks, bead leaks and corroded rims — the DIY way.

A bead leak lets a tyre lose air with no puncture. Learn the causes, how fitters reseal a leaking bead seat, and when the rim itself has to be replaced.

Corroded alloy rims break the bead seal and leak air, especially in coastal Australia. Here’s how the fix works, what it costs, and when to replace the wheel.