2009 Bentley Brooklands Tire Size

The original tire size for your 2009 Bentley Brooklands is listed below. Tap on the box to view a color-coded explanation of the best Bentley Brooklands tire size.

255/40ZR20

Simplified Size:  255-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Bentley Brooklands is 255/40ZR20.  A color-coded explanation of the 2009 Bentley Brooklands's tire size is shown below.

255

This number indicates that your tire has a width of 255 millimeters.

40

This number means that your tire has an aspect ratio of 40%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 40% of the width.  In this case, the sidewall height works out to be 102 millimeters.

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.

R

This letter denotes how your tire was constructed.  Radial is the standard construction method for about 99% of all tires sold today.

RRadial
BBias Belt
DDiagonal
20

The tire size was designed to fit rims or wheels that are 20 inches in diameter.