2009 Mercedes-Benz R320 Tire Size

The original tire size for your 2009 Mercedes-Benz R320 is listed below. Tap on the box to view a color-coded explanation of the best Mercedes-Benz R320 tire size.

Trim Options:

Bluetec

255/50R19/XL 107H

Simplified Size:  255-50-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz R320 is 255/50R19/XL 107H.  A color-coded explanation of the 2009 Mercedes-Benz R320's tire size is shown below.

255

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

19

The tire size was designed to fit rims or wheels that are 19 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.

107

This tire has a load index of 107, which means it's capable of carrying a load of 2145 pounds (975 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

50

This number means that your tire has an aspect ratio of 50%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width.  In this case, the sidewall height works out to be 127 millimeters.

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
H

This tire has a speed rating of H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.