2013 BMW 640i Tire Size

Your BMW was manufactured with different tire sizes.  To determine the best tire size for your specific 2013 BMW 640i, we first need to determine your rim size.  Please review the information below.

How to Determine Rim Size

Check your existing tires.  Your BMW 640i'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

2013 BMW 640i

 

Your 2013 BMW 640i 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 2013 BMW 640i.

Trim Options:

ConvertibleCoupe

245/45R18 96Y(Front)

Simplified Size:  245-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/45R18 96Y (Front).  A color-coded explanation of the 2013 BMW 640i's tire size is shown below.

245

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

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 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
18

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

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:

ConvertibleCoupe

275/40R18 99Y(Rear)

Simplified Size:  275-40-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/45R18 96Y (Front).  A color-coded explanation of the 2013 BMW 640i's tire size is shown below.

275

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

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
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.

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:

ConvertibleCoupe

245/45R18/XL 100V

Simplified Size:  245-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/45R18/XL 100V.  A color-coded explanation of the 2013 BMW 640i's tire size is shown below.

245

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

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 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
18

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

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.

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.

19-Inch Rims

2013 BMW 640i

 

The original tire size for your 2013 BMW 640i is listed below. Tap on the box to view a color-coded explanation of your BMW 640i's' tire size.

Trim Options:

ConvertibleCoupe

245/40R19 94Y(Front)

Simplified Size:  245-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/40R19 94Y (Front).  A color-coded explanation of the 2013 BMW 640i's tire size is shown below.

245

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

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 98 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.

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.

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:

ConvertibleCoupe

275/35R19 96Y(Rear)

Simplified Size:  275-35-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/40R19 94Y (Front).  A color-coded explanation of the 2013 BMW 640i's tire size is shown below.

275

This number indicates that your tire has a width of 275 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 96 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.

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.

20-Inch Rims

2013 BMW 640i

 

The original tire size for your 2013 BMW 640i is listed below. Tap on the box to view a color-coded explanation of your BMW 640i's' tire size.

Trim Options:

ConvertibleCoupe

245/35R20/XL 95Y(Front)

Simplified Size:  245-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/35R20/XL 95Y (Front).  A color-coded explanation of the 2013 BMW 640i'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
20

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

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.

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:

ConvertibleCoupe

275/30R20/XL 97Y(Rear)

Simplified Size:  275-30-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2013 BMW 640i is 245/35R20/XL 95Y (Front).  A color-coded explanation of the 2013 BMW 640i'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
20

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

97

This tire has a load index of 97, which means it's capable of carrying a load of 1606 pounds (730 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.

2013 BMW 640i - Similar Models

The 2013 BMW 640i has similar models that may have different tire sizes.

2013 BMW 640i Gran Coupe