# 2018 BMW Alpina B6 xDrive Gran Coupe Tire Size

Your BMW was manufactured with different tire sizes. To determine the best tire size for your specific 2018 BMW Alpina B6 xDrive Gran Coupe, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your BMW Alpina B6'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.

## 19-Inch Rims

### 2018 BMW Alpina B6 xDrive Gran Coupe

The original tire size for your 2018 BMW Alpina B6 xDrive Gran Coupe is listed below. Tap on the box to view a color-coded explanation of your BMW Alpina B6's' tire size.

## 245/40R19/XL 98

### Simplified Size: 245-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 BMW Alpina B6 xDrive Gran Coupe is **245/40R19/XL 98V**. A color-coded explanation of the 2018 BMW Alpina B6 xDrive Gran Coupe'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.
| ||||||

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. | ||||||

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 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

### 2018 BMW Alpina B6 xDrive Gran Coupe

The original tire size for your 2018 BMW Alpina B6 xDrive Gran Coupe is listed below. Tap on the box to view a color-coded explanation of your BMW Alpina B6's' tire size.

## 245/35R20/XL 95(Front)

### Simplified Size: 245-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 BMW Alpina B6 xDrive Gran Coupe is **245/35R20/XL 95Y (Front)**. A color-coded explanation of the 2018 BMW Alpina B6 xDrive Gran Coupe'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.
| ||||||

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. | ||||||

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. |

## 275/30R20/XL 97(Rear)

### Simplified Size: 275-30-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 BMW Alpina B6 xDrive Gran Coupe is **245/35R20/XL 95Y (Front)**. A color-coded explanation of the 2018 BMW Alpina B6 xDrive Gran Coupe'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.
| ||||||

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. | ||||||

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. |