2018 Audi RS7 Tire Size
The original tire size for your 2018 Audi RS7 is listed below. Tap on the box to view a color-coded explanation of the best Audi RS7 tire size.
275/30ZR21/XL (98)
Simplified Size: 275-30-21
Simplified size is useful for shopping and buying tires.
The original tire size for your 2018 Audi RS7 is 275/30ZR21/XL 98(Y). A color-coded explanation of the 2018 Audi RS7's tire size is shown below.
275 | This number indicates that your tire has a width of 275 millimeters. | ||||||
21 | The tire size was designed to fit rims or wheels that are 21 inches in diameter. | ||||||
XL | The mark of XL means extra load. A tire with this designation can handle higher inflation pressures than a regular tire, which increases its maximum load. | ||||||
98 | This tire has a load index of 98, which means it's capable of carrying a load of 1650 pounds (750 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
Z | This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating. | ||||||
30 | This number means that your tire has an aspect ratio of 30%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 30% of the width. In this case, the sidewall height works out to be 82 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
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This tire has a speed rating of Y, which means 186 mph (300 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |