Australia’s legal minimum tyre tread depth is 1.5mm in all principal grooves — not the UK’s 1.6mm. Here’s how to check it and what an illegal tyre costs you.
Legal Minimum Tyre Tread Depth in Australia: The 1.5mm Rule Explained
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Australian Legality and Compliance
How to Check Your Tread Depth Without a Gauge
Check tyre tread depth without a gauge using the Australian 20-cent coin test and built-in wear bars. Know the 1.5mm legal limit and when to replace tyres.
Tyre Wear Indicators: Where to Find Them and What They Mean
Tyre wear indicators are moulded bars at 1.5mm, Australia’s legal tread limit. Find them by the triangle or TWI mark and know exactly when to replace tyres.
ADR Requirements for Tyres and Wheels: A Plain-English Guide
Which Australian Design Rules cover your tyres and wheels? ADR 23, ADR 42 and the tyre placard explained, plus the VSB 14 road rules that apply in service.
Are Second-Hand Tyres Legal to Buy and Fit in Australia?
Second-hand tyres are legal to buy and fit in Australia if they’re roadworthy: 1.5mm tread, no damage, correct size. Here’s what’s legal, safe and what to avoid.
Are Retread Tyres Legal on Passenger Cars in Australia?
Retread tyres are legal on Australian passenger cars only if made to Australian Standard AS 1973 and correctly marked — but passenger-car retreads have all but vanished.
Are Stretched Tyres Legal in Australia?
Stretched tyres are not legal in Australia — a tyre must sit within its approved rim-width range. Here’s why they fail roadworthy, risk a defect notice and cut safety.
Can You Legally Mix Tyre Brands Front and Rear?
You can legally mix tyre brands front and rear in Australia if each axle is a matched pair — but never on the same axle. AWD and 4WD need all four matched.
Can You Run Different Tyre Sizes Front and Rear Legally?
Yes—you can run different tyre sizes front and rear in Australia if each axle is a matched pair and the fitment meets VSB 14 limits and the placard.