2009 Mercedes-Benz GL320 Tire Size

Your 2009 Mercedes-Benz GL320 was manufactured with multiple tire sizes.  Choose a tire size below to get a color-coded explanation of the differences.  Then pick the best tire size for your 2009 Mercedes-Benz GL320.

Trim Options:

Bluetec 4Matic

275/50R20 109H

Simplified Size:  275-50-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz GL320 is 275/50R20 109H.  A color-coded explanation of the 2009 Mercedes-Benz GL320's tire size is shown below.

275

This number indicates that your tire has a width of 275 millimeters.

20

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

109

This tire has a load index of 109, which means it's capable of carrying a load of 2266 pounds (1030 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 137 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.

Trim Options:

Bluetec 4Matic

275/50R20 109W

Simplified Size:  275-50-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz GL320 is 275/50R20 109W.  A color-coded explanation of the 2009 Mercedes-Benz GL320's tire size is shown below.

275

This number indicates that your tire has a width of 275 millimeters.

20

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

109

This tire has a load index of 109, which means it's capable of carrying a load of 2266 pounds (1030 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 137 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
W

This tire has a speed rating of W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.