What's the difference between 91V and 91W tyres in the UK?

The key differences between 91V and 91W tyres are their load capacity and speed ratings. A 91V tyre can carry 615kg with a maximum speed of 240km/h, while a 91W tyre has a lower load capacity of 595kg but higher speed rating of 270km/h. These specifications are particularly important for UK drivers choosing tyres for performance vehicles like the BMW M3 or Mercedes-AMG models. The load index (91) indicates maximum weight capacity in kilograms, while the speed symbol (V/W) shows the tyre's maximum safe speed. You'll find these ratings moulded on the tyre sidewall alongside other important specifications like tread pattern and size.