2009 BMW 550i Tire Size

Your BMW was manufactured with different tire sizes.  To determine the best tire size for your specific 2009 BMW 550i, we first need to determine your rim size.  Please review the information below.

How to Determine Rim Size

Check your existing tires.  Your BMW 550i'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.

17-Inch Rims

2009 BMW 550i

 

The original tire size for your 2009 BMW 550i is listed below. Tap on the box to view a color-coded explanation of your BMW 550i's' tire size.

225/50R17 94W

Simplified Size:  225-50-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 BMW 550i is 225/50R17 94W.  A color-coded explanation of the 2009 BMW 550i's tire size is shown below.

225

This number indicates that your tire has a width of 225 millimeters.

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 112 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
17

The tire size was designed to fit rims or wheels that are 17 inches in diameter.

94

This tire has a load index of 94, which means it's capable of carrying a load of 1474 pounds (670 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

19-Inch Rims

2009 BMW 550i

 

The original tire size for your 2009 BMW 550i is listed below. Tap on the box to view a color-coded explanation of your BMW 550i's' tire size.

Trim Options:

w/Sport Pkg.

245/35R19/XL 93Y(Front)

Simplified Size:  245-35-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 BMW 550i is 245/35R19/XL 93Y (Front).  A color-coded explanation of the 2009 BMW 550i's tire size is shown below.

245

This number indicates that your tire has a width of 245 millimeters.

35

This number means that your tire has an aspect ratio of 35%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width.  In this case, the sidewall height works out to be 85 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
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.

93

This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

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.

275/30R19/XL 96Y(Rear)

Simplified Size:  275-30-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 BMW 550i is 245/35R19/XL 93Y (Front).  A color-coded explanation of the 2009 BMW 550i's tire size is shown below.

275

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

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.

RRadial
BBias Belt
DDiagonal
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.

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.

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.