# 2018 GMC Yukon Tire Size

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

## How to Determine Rim Size

Check your existing tires. Your GMC Yukon'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 GMC Yukon

Your 2018 GMC Yukon 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 GMC Yukon.

Trim Options:

### SLESLT

## P265/65R18 112

### Simplified Size: 265-65-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 GMC Yukon is **P265/65R18 112H**. A color-coded explanation of the 2018 GMC Yukon's tire size is shown below.

P | This letter denotes the intended use of the tire.
| ||||||

265 | This number indicates that your tire has a width of 265 millimeters. | ||||||

65 | This number means that your tire has an aspect ratio of 65%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 65% of the width. In this case, the sidewall height works out to be 172 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. | ||||||

112 | This tire has a load index of 112, which means it's capable of carrying a load of 2464 pounds (1120 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:

### SLESLT

## P265/65R18 112

### Simplified Size: 265-65-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 GMC Yukon is **P265/65R18 112T**. A color-coded explanation of the 2018 GMC Yukon's tire size is shown below.

P | This letter denotes the intended use of the tire.
| ||||||

265 | This number indicates that your tire has a width of 265 millimeters. | ||||||

65 | This number means that your tire has an aspect ratio of 65%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 65% of the width. In this case, the sidewall height works out to be 172 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. | ||||||

112 | This tire has a load index of 112, which means it's capable of carrying a load of 2464 pounds (1120 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 T, which means 118 mph (190 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

## 20-Inch Rims

### 2018 GMC Yukon

The original tire size for your 2018 GMC Yukon is listed below. Tap on the box to view a color-coded explanation of your GMC Yukon's' tire size.

Trim Options:

### DenaliSLESLT

## P275/55R20 111

### Simplified Size: 275-55-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 GMC Yukon is **P275/55R20 111S**. A color-coded explanation of the 2018 GMC Yukon's tire size is shown below.

P | This letter denotes the intended use of the tire.
| ||||||

275 | This number indicates that your tire has a width of 275 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 151 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. | ||||||

111 | This tire has a load index of 111, which means it's capable of carrying a load of 2398 pounds (1090 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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

## 22-Inch Rims

### 2018 GMC Yukon

The original tire size for your 2018 GMC Yukon is listed below. Tap on the box to view a color-coded explanation of your GMC Yukon's' tire size.

Trim Options:

### DenaliSLESLT

## P285/45R22 110

### Simplified Size: 285-45-22

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 GMC Yukon is **P285/45R22 110H**. A color-coded explanation of the 2018 GMC Yukon's tire size is shown below.

P | This letter denotes the intended use of the tire.
| ||||||

285 | This number indicates that your tire has a width of 285 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 128 millimeters. | ||||||

R |
| ||||||

22 | The tire size was designed to fit rims or wheels that are 22 inches in diameter. | ||||||

110 | This tire has a load index of 110, which means it's capable of carrying a load of 2332 pounds (1060 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. |

### 2018 GMC Yukon - Similar Models

The 2018 GMC Yukon has similar models that may have different tire sizes.

2018 GMC Yukon XL