2009 Mercedes-Benz S550 Tire Size

Your Mercedes-Benz was manufactured with different tire sizes.  To determine the best tire size for your specific 2009 Mercedes-Benz S550, we first need to determine your rim size.  Please review the information below.

How to Determine Rim Size

Check your existing tires.  Your Mercedes-Benz S550's rim size is the number to the right of the R.  In the example pictured here, the tire size fits 16-inch rims.

Rim Size Selection

Now that you know your rim size, make a selection below to filter your results.

18-Inch Rims

2009 Mercedes-Benz S550

 

The original tire size for your 2009 Mercedes-Benz S550 is listed below. Tap on the box to view a color-coded explanation of your Mercedes-Benz S550's' tire size.

Trim Options:

4MaticBase

255/45R18 99H

Simplified Size:  255-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/45R18 99H.  A color-coded explanation of the 2009 Mercedes-Benz S550's tire size is shown below.

255

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

18

The tire size was designed to fit rims or wheels that are 18 inches in diameter.

99

This tire has a load index of 99, which means it's capable of carrying a load of 1705 pounds (775 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

45

This number means that your tire has an aspect ratio of 45%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 45% of the width.  In this case, the sidewall height works out to be 114 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.

19-Inch Rims

2009 Mercedes-Benz S550

 

There are multiple tire sizes for your 2009 Mercedes-Benz S550 that depend upon the trim level.  Look for your trim level below to get a color-coded explanation of your tire size.  Then pick the best tire size for your 2009 Mercedes-Benz S550.

Trim Options:

4Matic w/Sport Pkg.

255/40R19 96Y

Simplified Size:  255-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19 96Y.  A color-coded explanation of the 2009 Mercedes-Benz S550'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.

96

This tire has a load index of 96, which means it's capable of carrying a load of 1562 pounds (710 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

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
Y

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.

275/40R19 101V(Rear)

Simplified Size:  255-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19/RF 100V (Front).  A color-coded explanation of the 2009 Mercedes-Benz S550's tire size is shown below.

275

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

19

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

101

This tire has a load index of 101, which means it's capable of carrying a load of 1815 pounds (825 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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 110 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
V

This tire has a speed rating of V, which means 149 mph (240 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

255/40R19/RF 100V(Front)

Simplified Size:  275-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19/RF 100V (Front).  A color-coded explanation of the 2009 Mercedes-Benz S550'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.

RF

The mark of RF indicates that the tire is reinforced.  This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load.

100

This tire has a load index of 100, which means it's capable of carrying a load of 1760 pounds (800 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

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
V

This tire has a speed rating of V, which means 149 mph (240 km/h) is the maximum speed that can be sustained for 10 minutes.  A higher speed becomes dangerous.

Trim Options:

4Matic w/Sport Pkg.

255/40R19/RF 100Y

Simplified Size:  255-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19/RF 100Y.  A color-coded explanation of the 2009 Mercedes-Benz S550'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.

RF

The mark of RF indicates that the tire is reinforced.  This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load.

100

This tire has a load index of 100, which means it's capable of carrying a load of 1760 pounds (800 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

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
Y

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.

Trim Options:

w/Sport Pkg.

275/40R19 101Y(Rear)

Simplified Size:  255-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19/RF 100Y (Front).  A color-coded explanation of the 2009 Mercedes-Benz S550's tire size is shown below.

275

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

19

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

101

This tire has a load index of 101, which means it's capable of carrying a load of 1815 pounds (825 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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 110 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
Y

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.

Trim Options:

w/Sport Pkg.

255/40R19/RF 100Y(Front)

Simplified Size:  275-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Mercedes-Benz S550 is 255/40R19/RF 100Y (Front).  A color-coded explanation of the 2009 Mercedes-Benz S550'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.

RF

The mark of RF indicates that the tire is reinforced.  This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load.

100

This tire has a load index of 100, which means it's capable of carrying a load of 1760 pounds (800 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

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
Y

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.