2003 BMW 540i Tire Size

Your BMW was manufactured with different tire sizes.  To determine the best tire size for your specific 2003 BMW 540i, we first need to determine your rim size.  Please review the information below.

How to Determine Rim Size

Check your existing tires.  Your BMW 540i'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.

16-Inch Rims

2003 BMW 540i

 

The original tire size for your 2003 BMW 540i is listed below. Tap on the box to view a color-coded explanation of your BMW 540i's' tire size.

225/55R16 95H

Simplified Size:  225-55-16

Simplified size is useful for shopping and buying tires.

The original tire size for your 2003 BMW 540i is 225/55R16 95H.  A color-coded explanation of the 2003 BMW 540i's tire size is shown below.

225

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

16

The tire size was designed to fit rims or wheels that are 16 inches in diameter.

95

This tire has a load index of 95, which means it's capable of carrying a load of 1518 pounds (690 kg) or less.  A higher number means the tire can carry more weight.  A lower number means the opposite.

55

This number means that your tire has an aspect ratio of 55%.  In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width.  In this case, the sidewall height works out to be 123 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.

18-Inch Rims

2003 BMW 540i

 

The original tire size for your 2003 BMW 540i is listed below. Tap on the box to view a color-coded explanation of your BMW 540i's' tire size.

265/35ZR18(Rear)

Simplified Size:  235-40-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2003 BMW 540i is 235/40ZR18 (Front).  A color-coded explanation of the 2003 BMW 540i's tire size is shown below.

265

This number indicates that your tire has a width of 265 millimeters.

18

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

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.

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 92 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

235/40ZR18(Front)

Simplified Size:  265-35-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2003 BMW 540i is 235/40ZR18 (Front).  A color-coded explanation of the 2003 BMW 540i's tire size is shown below.

235

This number indicates that your tire has a width of 235 millimeters.

18

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

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.

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 94 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