# 2018 Mercedes-Benz GLC300 Tire Size

Your Mercedes-Benz was manufactured with different tire sizes. To determine the best tire size for your specific 2018 Mercedes-Benz GLC300, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your Mercedes-Benz GLC300'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

### 2018 Mercedes-Benz GLC300

Your 2018 Mercedes-Benz GLC300 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 2018 Mercedes-Benz GLC300.

Trim Options:

### 4MaticBase

## 235/60R18 103

### Simplified Size: 235-60-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **235/60R18 103H**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

60 | This number means that your tire has an aspect ratio of 60%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 60% of the width. In this case, the sidewall height works out to be 141 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. | ||||||

103 | This tire has a load index of 103, which means it's capable of carrying a load of 1925 pounds (875 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 H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

Trim Options:

### 4MaticBase

## 235/60R18 103

### Simplified Size: 235-60-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **235/60R18 103V**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

60 | This number means that your tire has an aspect ratio of 60%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 60% of the width. In this case, the sidewall height works out to be 141 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. | ||||||

103 | This tire has a load index of 103, which means it's capable of carrying a load of 1925 pounds (875 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

### 2018 Mercedes-Benz GLC300

Your 2018 Mercedes-Benz GLC300 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 2018 Mercedes-Benz GLC300.

Trim Options:

### 4Matic4Matic CoupeBase

## 235/55R19 101

### Simplified Size: 235-55-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **235/55R19 101H**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

55 | This number means that your tire has an aspect ratio of 55%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width. In this case, the sidewall height works out to be 129 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 H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

Trim Options:

### 4Matic4Matic CoupeBase

## 235/55R19 101

### Simplified Size: 235-55-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **235/55R19 101V**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

55 | This number means that your tire has an aspect ratio of 55%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 55% of the width. In this case, the sidewall height works out to be 129 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 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 Mercedes-Benz GLC300

There are multiple tire sizes for your 2018 Mercedes-Benz GLC300 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 2018 Mercedes-Benz GLC300.

Trim Options:

### 4MaticBase

## 255/45R20 101

### Simplified Size: 255-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **255/45R20 101W**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

255 | This number indicates that your tire has a width of 255 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 114 millimeters. | ||||||

R |
| ||||||

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

### 4Matic Coupe

## 255/45R20/XL 105(Front)

### Simplified Size: 255-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **255/45R20/XL 105V (Front)**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

255 | This number indicates that your tire has a width of 255 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 114 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. | ||||||

105 | This tire has a load index of 105, which means it's capable of carrying a load of 2035 pounds (925 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. |

Trim Options:

### 4Matic Coupe

## 285/40R20/XL 108(Rear)

### Simplified Size: 285-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **255/45R20/XL 105V (Front)**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

285 | This number indicates that your tire has a width of 285 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 114 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. | ||||||

108 | This tire has a load index of 108, which means it's capable of carrying a load of 2200 pounds (1000 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

Trim Options:

### 4Matic Coupe

## 255/45R20/XL 105(Front)

### Simplified Size: 255-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **255/45R20/XL 105Y (Front)**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

255 | This number indicates that your tire has a width of 255 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 114 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. | ||||||

105 | This tire has a load index of 105, which means it's capable of carrying a load of 2035 pounds (925 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:

### 4Matic Coupe

## 285/40R20/XL 108(Rear)

### Simplified Size: 285-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Mercedes-Benz GLC300 is **255/45R20/XL 105Y (Front)**. A color-coded explanation of the 2018 Mercedes-Benz GLC300's tire size is shown below.

285 | This number indicates that your tire has a width of 285 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 114 millimeters. | ||||||

R |
| ||||||

20 | The tire size was designed to fit rims or wheels that are 20 inches in diameter. | ||||||

XL | |||||||

108 | This tire has a load index of 108, which means it's capable of carrying a load of 2200 pounds (1000 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. |