# 2015 BMW X4 Tire Size

Your BMW was manufactured with different tire sizes. To determine the best tire size for your specific 2015 BMW X4, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your BMW X4'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

### 2015 BMW X4

The original tire size for your 2015 BMW X4 is listed below. Tap on the box to view a color-coded explanation of your BMW X4's' tire size.

Trim Options:

### xDrive28i

## 245/50R18 100

### Simplified Size: 245-50-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/50R18 100V**. A color-coded explanation of the 2015 BMW X4's tire size is shown below.

245 | This number indicates that your tire has a width of 245 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 122 millimeters. | ||||||

R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
| ||||||

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

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. | ||||||

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

### 2015 BMW X4

There are multiple tire sizes for your 2015 BMW X4 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 2015 BMW X4.

Trim Options:

### xDrive28i M SportxDrive35i M Sport

## 245/45R19 98(Front)

### Simplified Size: 245-45-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/45R19 98W (Front)**. A color-coded explanation of the 2015 BMW X4'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.
| ||||||

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

98 | This tire has a load index of 98, which means it's capable of carrying a load of 1650 pounds (750 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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. |

Trim Options:

### xDrive28i M SportxDrive35i M Sport

## 275/40R19 101(Rear)

### Simplified Size: 275-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/45R19 98W (Front)**. A color-coded explanation of the 2015 BMW X4'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.
| ||||||

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. | ||||||

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. |

Trim Options:

### xDrive28i M SportxDrive35i M Sport

## 245/45R19 98(Front)

### Simplified Size: 245-45-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/45R19 98Y (Front)**. A color-coded explanation of the 2015 BMW X4'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 |
| ||||||

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

98 | This tire has a load index of 98, which means it's capable of carrying a load of 1650 pounds (750 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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:

### xDrive28i M SportxDrive35i M Sport

## 275/40R19 101(Rear)

### Simplified Size: 275-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/45R19 98Y (Front)**. A color-coded explanation of the 2015 BMW X4'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 |
| ||||||

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. | ||||||

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:

### xDrive28ixDrive28i M SportxDrive28i xLinexDrive35ixDrive35i M SportxDrive35i xLine

## 245/45R19/XL 102

### Simplified Size: 245-45-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/45R19/XL 102V**. A color-coded explanation of the 2015 BMW X4'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 |
| ||||||

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. | ||||||

102 | This tire has a load index of 102, which means it's capable of carrying a load of 1870 pounds (850 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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. |

## 20-Inch Rims

### 2015 BMW X4

The original tire size for your 2015 BMW X4 is listed below. Tap on the box to view a color-coded explanation of your BMW X4's' tire size.

Trim Options:

### xDrive28i M SportxDrive35i M Sport

## 245/40R20/XL 99(Front)

### Simplified Size: 245-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/40R20/XL 99Y (Front)**. A color-coded explanation of the 2015 BMW X4'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 |
| ||||||

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. | ||||||

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. | ||||||

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:

### xDrive28i M SportxDrive35i M Sport

## 275/35R20/XL 102(Rear)

### Simplified Size: 275-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW X4 is **245/40R20/XL 99Y (Front)**. A color-coded explanation of the 2015 BMW X4'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 |
| ||||||

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. | ||||||

102 | This tire has a load index of 102, which means it's capable of carrying a load of 1870 pounds (850 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||