How do you find out the right tyre size for your vehicle?

Your owner's manual will give details of the tyres approved for your vehicle. In some countries the vehicle documents also contain this information.

They may also carry details of optional tyre sizes or special regulations (restrictions with regard to tyre manufacturer or tread pattern designs).

What should you bear in mind when switching to wide tyres?

If the tyre is listed in your owner's manual, and the wheel rims are a suitable size, you can go ahead and have it fitted. If this is not the case, you may need special approval from the vehicle manufacturer.

Any tyre choice must always take into consideration the maximum design speed of the vehicle, as well as MOT regulations and vehicle, wheel and tyre manufacturers' recommendations.

If in doubt check with a tyre specialist.

Should you have specific queries, please contact our UK Technical Hotline on 0906 302 3839 (calls cost 50p per minute).