Fitment and Sizing

LT vs P-metric tyres in Australia: how light truck and passenger construction differ in strength, ride, fuel use and load — and which one suits your vehicle.

Yes—within limits. Learn the safe rim width range for wider tyres, the 5mm-per-half-inch rule, and the Australian legality traps before you fit a wider set.

A clear rim width to tyre width chart for Australian fitments, plus the min, ideal and max tyre width for each rim size and the fitment rules that matter.

Staggered wheel setups run wider rear tyres than front. Here’s how they work, which Australian cars suit them, and the rotation and cost traps to avoid.

Hub-centric wheels are centred by the hub; lug-centric wheels by the nuts. Here’s the difference, why aftermarket wheels vibrate, and when you need rings.

Centre bore is the hole behind your wheel that sits on the hub. Get it wrong and your new wheels vibrate at highway speed. Here’s how it works in Australia.

Fit bigger or smaller tyres and your speedo lies. Here’s exactly how tyre size changes your speedometer reading in Australia, the ADR rules, and the safe limits.

Bigger tyres make your speedo read low, so you can be speeding without knowing. Here’s how much upsizing is too much in Australia, plus the legal diameter limits.

Mixing tyre sizes front and rear on an AWD can destroy the centre diff or coupling. Here’s the tolerance, the real risk, and the one exception, for Australian drivers.