# 2009 Ford F-150 STX Tire Size

Your Ford was manufactured with different tire sizes. To determine the best tire size for your specific 2009 Ford F-150 STX, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your Ford F-150'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.

## 17-Inch Rims

### 2009 Ford F-150 STX

There are multiple tire sizes for your 2009 Ford F-150 STX 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 2009 Ford F-150 STX.

Trim Options:

### 4x2

## P255/65R17 108

### Simplified Size: 255-65-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Ford F-150 STX is **P255/65R17 108S**. A color-coded explanation of the 2009 Ford F-150 STX'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. | ||||||

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 165 millimeters. | ||||||

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

17 | The tire size was designed to fit rims or wheels that are 17 inches in diameter. | ||||||

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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

Trim Options:

### 4x4

## P255/70R17 110

### Simplified Size: 255-70-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Ford F-150 STX is **P255/70R17 110S**. A color-coded explanation of the 2009 Ford F-150 STX'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.
| ||||||

17 | The tire size was designed to fit rims or wheels that are 17 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 S, which means 111 mph (180 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

## 18-Inch Rims

### 2009 Ford F-150 STX

There are multiple tire sizes for your 2009 Ford F-150 STX 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 2009 Ford F-150 STX.

Trim Options:

### 4x2

## P265/60R18 109

### Simplified Size: 265-60-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Ford F-150 STX is **P265/60R18 109T**. A color-coded explanation of the 2009 Ford F-150 STX'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. | ||||||

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 159 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. | ||||||

109 | This tire has a load index of 109, which means it's capable of carrying a load of 2266 pounds (1030 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:

### 4x4

## P275/65R18 114

### Simplified Size: 275-65-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2009 Ford F-150 STX is **P275/65R18 114T**. A color-coded explanation of the 2009 Ford F-150 STX'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 |
| ||||||

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. |

### 2009 Ford F-150 STX - Similar Models

The 2009 Ford F-150 STX has similar models that may have different tire sizes.

2009 Ford F-150 FX42009 Ford F-150 King Ranch2009 Ford F-150 Lariat2009 Ford F-150 Platinum2009 Ford F-150 XL2009 Ford F-150 XLT