Tyre Basics
When should you replace your tyres?
Quick answer
Tread depth, age and damage all matter. Here's how to tell when it's time for new tyres.
Table of contents (4 sections)
Tyres don't come with a fixed expiry, but there are clear signs they need replacing.
1. Tread wear indicators
Small raised bars in the main grooves show when tread reaches 1.6 mm. If the tread is level with them, replace the tyre.
2. Age
Rubber hardens with age. Check the four-digit DOT code (e.g. 2321 = week 23 of 2021). Most makers advise replacing tyres after five to six years even if tread remains.
3. Damage
Bulges, deep cuts, cracks or exposed cords mean the tyre is unsafe.
4. Repeated punctures
Several repairs close together can weaken a tyre.
