# 2015 BMW Alpina B7L xDrive Tire Size

The original tire size for your 2015 BMW Alpina B7L xDrive is listed below. Tap on the box to view a color-coded explanation of the best BMW Alpina B7L tire size.

## 245/35ZR21/XL (96 )(Front)

### Simplified Size: 245-35-21

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW Alpina B7L xDrive is **245/35ZR21/XL (96Y) (Front)**. A color-coded explanation of the 2015 BMW Alpina B7L xDrive'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. | ||||||

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. | ||||||

R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
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21 | The tire size was designed to fit rims or wheels that are 21 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. | ||||||

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. |

## 285/30ZR21/XL (100 )(Rear)

### Simplified Size: 285-30-21

Simplified size is useful for shopping and buying tires.

The original tire size for your 2015 BMW Alpina B7L xDrive is **245/35ZR21/XL (96Y) (Front)**. A color-coded explanation of the 2015 BMW Alpina B7L xDrive's tire size is shown below.

285 | This number indicates that your tire has a width of 285 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 85 millimeters. | ||||||

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. | ||||||

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

21 | The tire size was designed to fit rims or wheels that are 21 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. | ||||||

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. |

### 2015 BMW Alpina B7L xDrive - Similar Models

The 2015 BMW Alpina B7L xDrive has similar models that may have different tire sizes.

2015 BMW Alpina B7L