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How much fuel the tyre uses as it rolls. Graded A to E, where A is the most efficient and E the least.
How well the tyre stops in the wet. Graded A to E, where A is the shortest stopping distance. Each grade is worth roughly 3 metres, about a car length.
How loud the tyre is from outside the car, measured in decibels. Graded A to C, where A is the quietest.
Designed for cars, rather than vans, 4x4s or commercial vehicles.
A stronger sidewall lets this tyre carry more weight than a standard tyre of the same size. Marked XL on the sidewall.
255/50 R21 tyres are SUV tyres and come as standard on the BMW iX. The numbers on the tyre mean the following. The 255 means the tyre is 255mm wide. The 50 refers to the aspect ratio. Therefore, the height of the sidewall is 50% of 255mm, which is 128mm. R21 means the tyre is radial with a rim diameter of 21 inches. Therefore, the overall diameter is 788mm. The iX uses the 128mm sidewall with an XL (extra load) rating. At Tyres.co.uk, we sell 255/50 R21 tyres, including XL versions.
We take care of everything for you with our fully fitted prices:
You pay online for the tyres and the fitting, so when you come for your appointment, there are no extra charges for the tyre fitting.
The price shown for mail-order tyres covers the tyre only (including VAT). Once you’ve selected your tyres and proceed to the basket, a delivery fee will be added to your order. Please be aware that certain areas of the country may incur additional delivery charges and, in some cases, slightly longer delivery times.
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