Understanding tyre terminology can make choosing, maintaining and comparing tyres much easier. Whether you're looking at tyre sizes, load ratings, construction types or performance features, this glossary explains some of the most common tyre terms used across the Australian tyre industry.
Understanding tyre terminology can make choosing, maintaining and comparing tyres much easier. Whether you’re looking at tyre sizes, load ratings, construction types or performance features, this glossary explains some of the most common tyre terms used across the Australian tyre industry.
A versatile tyre designed to balance on-road comfort with off-road traction. Suitable for drivers who split their time between sealed roads, gravel roads and light off-road use.
The height of a tyre’s sidewall expressed as a percentage of its width. For example, a 55 profile tyre has a sidewall height equal to 55% of the tyre’s width.
When a tyre loses contact with the road because water builds between the tread and the road surface.
The reinforced edge of the tyre that seals against the wheel rim.
A tyre designed to suit the additional weight, instant torque and reduced cabin noise of electric vehicles.
A tyre designed primarily for sealed road driving, offering comfort, low noise, fuel efficiency and everyday handling.
A numerical code that indicates the maximum weight a tyre can safely carry.
A stronger tyre construction designed for higher loads, towing, commercial use and demanding conditions.
An off-road focused tyre with aggressive tread blocks designed to maximise traction in mud, loose surfaces, rocky terrain and challenging off-road conditions.
The tyre fitted by the vehicle manufacturer when the vehicle leaves the factory.
Pounds per Square Inch. A common measurement used for tyre pressure.
The force required for a tyre to roll. Lower rolling resistance can improve fuel economy and EV range.
A tyre positioned between an All-Terrain and Mud Terrain tyre. RT tyres typically feature a more aggressive tread pattern and reinforced construction than an AT tyre while maintaining better road manners and lower noise than a full MT tyre.
The width of the tyre from sidewall to sidewall, measured in millimetres.
The area between the tread and the wheel rim containing tyre markings and specifications.
A letter indicating the maximum speed a tyre can safely sustain under specified conditions.
Built-in markers that show when a tyre has reached the legal minimum tread depth.
The practice of moving tyres between positions on a vehicle to encourage even wear.
Running a tyre below the recommended pressure, which can increase wear, heat build-up and fuel consumption.
Uniform Tyre Quality Grading. A rating system comparing treadwear, traction and temperature performance.
Adjustment of wheel angles to ensure tyres wear evenly and the vehicle handles correctly.
