# 2018 Toyota Tundra Tire Size

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

## How to Determine Rim Size

Check your existing tires. Your Toyota Tundra'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 Toyota Tundra

There are multiple tire sizes for your 2018 Toyota Tundra 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 Toyota Tundra.

Trim Options:

### SR w/steel wheelsSR5 w/steel wheels

## P255/70R18 112

### Simplified Size: 255-70-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Toyota Tundra is **P255/70R18 112T**. A color-coded explanation of the 2018 Toyota Tundra's tire size is shown below.

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

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

70 | This number means that your tire has an aspect ratio of 70%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 70% of the width. In this case, the sidewall height works out to be 178 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. |

Trim Options:

### 1794 Edition w/aluminum wheelsLimited w/aluminum wheelsSR5 w/aluminum wheelsTRD Pro w/aluminum wheels

## P275/65R18 114

### Simplified Size: 275-65-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Toyota Tundra is **P275/65R18 114T**. A color-coded explanation of the 2018 Toyota Tundra'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. | ||||||

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 178 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. | ||||||

114 | This tire has a load index of 114, which means it's capable of carrying a load of 2596 pounds (1180 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 Toyota Tundra

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

Trim Options:

### 1794 Edition w/aluminum wheelsLimited w/aluminum wheelsPlatinum w/aluminum wheelsSR5 w/aluminum wheelsTRD Sport w/aluminum wheels

## P275/55R20 111

### Simplified Size: 275-55-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Toyota Tundra is **P275/55R20 111H**. A color-coded explanation of the 2018 Toyota Tundra'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 H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |