Speed Ratings / Load Index

A tyre's speed rating indicates the maximum speed at which a tyre can carry the load corresponding with its load index. The load index is a numerical code and corresponds to the maximum load a tyre can carry at the speed indicated by its speed rating.

Generally, maximum tyre speed is rated in alphabetical order. However, W & Y rated tyres are a special case as they can operate at higher maximum speeds than older Z rated tyres. It is therefore safe to replace your current Z rated tyres with W or Y rated tyres.

It is important that you do not fit tyres to your vehicle with a lower speed rating or load index than recommended by the manufacturer. Fitting lower speed rated tyres or tyres with a lower load index may invalidate your insurance.

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What Are Winter Tyres?

Already widely used in Continental Europe, a winter tyre offers significant performance improvements.

• Enhanced performance – the technology in a winter tyre means it performs better when the temperature drops below 7° celcius

• Better grip – the special compound used in a winter tyre means it remains softer in low temperatures offering more grip, better braking, traction and handling

• Greater control and safety – the tread design of a winter tyre has been specially created to offer better grip and traction in the snow

• Speed rating – cold weather tyres have a lower speed rating than a summer tyre due to the compound they are made from. Please be aware that your driving will not be compromised as even an H rated tyre has a maximum speed of 131mph

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