Tyres Size & Specs

When you are looking at your tyres on your vehicle, check to make sure that your Width, Profile, Rim, Load and Speed rating match.
The example tyre below has a tyre size of 185/55R15 81H. Where the numbers appear in the left-hand example below is where your current tyre's numbers will appear on the tyres you have fitted to your vehicle.

What do the above markings mean?

Width (A) - The tyre width measured in millimetres. In this example, the width is 185.
Profile / Aspect Ratio (B) - The profile is the depth of the tyre sidewall. This measurement is taken from the wheel to the outer circumference of the tyre and is a percentage of your tyre's width (55% of 185mm). In the example above, the profile is 55.
Rim Diameter (C) - The diameter of the wheel rim measured in inches. In this example, the rim diameter is 15.
Load index - The load index on a tyre lets us know what the maximum load-carrying capacity of that tyre is. You are able to order a load index that is the same or above your vehicle's standard requirement. In this example, the load index is 81.
Speed rating - This indicates the maximum speed a tire can safely handle. It's important to match the speed rating with the vehicle's capabilities. Speed ratings were established to match the speed capability of tyres with the top speed capability of the vehicles to which they are applied.
In this example, the speed rating is 210km/hr / H rated.