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With many different sizes, types and brands of tyres on the market, the right choice of tyre for your vehicle has many factors to consider and may be quite confusing. To help you to make the right choice, we have prepared the following guide to tyres to help.
How To find The Correct Tyre Size
To find the correct size of tyre for your vehicle, you can look on the sidewall of your existing tyre or in your vehicle's driver manual. You will see a series of numbers that look like this:
So, what do the numbers mean?
Width - quite simply, the width of the tyre in millimetres. In the example about the tyre is 185 mm wide.
Profile - also known as the tyre Aspect Ratio. This number relates to the ratio - expressed as a percentage - of the tyre height to the width of the sidewall. In this case 55% of 185mm.
Rim Size - The diameter of the wheel rim that the tyre is to be fitted to.
Load Rating - The load rating of a tyre determines what weight each tyre is able to carry. This is usually found after the diameter reading and before the speed rating. The following table shows the weight that each index rating is able to carry:
Speed Rating - You will find the speed rating at the end of the tyre's size. It is always represented by a letter - in the following example the tyre speed rating is "H", and represents the maximum speed at which the tyre can carry a load corresponding to its load rating.