# 2020 BMW M340i Tire Size

Your BMW was manufactured with different tire sizes. To determine the best tire size for your specific 2020 BMW M340i, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your BMW M340i'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

### 2020 BMW M340i

Your 2020 BMW M340i 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 2020 BMW M340i.

## 225/45R18/XL 95

### Simplified Size: 225-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/45R18/XL 95H**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

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

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. | ||||||

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. | ||||||

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 101 millimeters. | ||||||

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

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. |

## 255/40R18/XL 99(Rear)

### Simplified Size: 225-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/45R18/XL 95Y (Front)**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

255 | This number indicates that your tire has a width of 255 millimeters. | ||||||

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. | ||||||

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. | ||||||

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 102 millimeters. | ||||||

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

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. |

## 225/45R18/XL 95(Front)

### Simplified Size: 255-40-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/45R18/XL 95Y (Front)**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

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

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. | ||||||

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. | ||||||

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 101 millimeters. | ||||||

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

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. |

## 19-Inch Rims

### 2020 BMW M340i

Your 2020 BMW M340i 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 2020 BMW M340i.

## 225/40R19/XL 93

### Simplified Size: 225-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/40R19/XL 93H**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

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

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

XL | |||||||

93 | This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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 90 millimeters. | ||||||

R |
| ||||||

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. |

## 255/35R19/XL 96(Rear)

### Simplified Size: 225-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/40R19/XL 93Y (Front)**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

255 | This number indicates that your tire has a width of 255 millimeters. | ||||||

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

XL | |||||||

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. | ||||||

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 89 millimeters. | ||||||

R |
| ||||||

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. |

## 225/40R19/XL 93(Front)

### Simplified Size: 255-35-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2020 BMW M340i is **225/40R19/XL 93Y (Front)**. A color-coded explanation of the 2020 BMW M340i's tire size is shown below.

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

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

XL | |||||||

93 | This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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 90 millimeters. | ||||||

R |
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