# 2018 Lexus LS500 Tire Size

Your Lexus was manufactured with different tire sizes. To determine the best tire size for your specific 2018 Lexus LS500, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your Lexus LS500'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.

## 19-Inch Rims

### 2018 Lexus LS500

Your 2018 Lexus LS500 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 Lexus LS500.

## 245/50RF19 101

### Simplified Size: 245-50-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/50RF19 101V**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 millimeters. |

50 | This number means that your tire has an aspect ratio of 50%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width. In this case, the sidewall height works out to be 122 millimeters. |

RF | The mark of RF indicates that the tire is reinforced. This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load. |

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. |

## 245/50RF19 101

### Simplified Size: 245-50-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/50RF19 101W**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 millimeters. |

50 | This number means that your tire has an aspect ratio of 50%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width. In this case, the sidewall height works out to be 122 millimeters. |

RF | The mark of RF indicates that the tire is reinforced. This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load. |

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 W, which means 167 mph (270 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |

## 20-Inch Rims

### 2018 Lexus LS500

There are multiple tire sizes for your 2018 Lexus LS500 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 Lexus LS500.

## 245/45RF20 99

### Simplified Size: 245-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99V**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 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 110 millimeters. |

RF | The mark of RF indicates that the tire is reinforced. This means it can handle a higher inflation pressure than a standard tire, which increases its maximum load. |

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

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. |

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:

### F Sport

## 245/45RF20 99(Front)

### Simplified Size: 245-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99V (Front)**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 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 110 millimeters. |

RF | |

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

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. |

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:

### F Sport

## 275/40RF20 102(Rear)

### Simplified Size: 275-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99V (Front)**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

275 | This number indicates that your tire has a width of 275 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 110 millimeters. |

RF | |

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

102 | This tire has a load index of 102, which means it's capable of carrying a load of 1870 pounds (850 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. |

## 245/45RF20 99

### Simplified Size: 245-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99Y**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 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 110 millimeters. |

RF | |

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

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. |

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:

### F Sport

## 245/45RF20 99(Front)

### Simplified Size: 245-45-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99Y (Front)**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

245 | This number indicates that your tire has a width of 245 millimeters. |

45 | |

RF | |

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

99 | |

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:

### F Sport

## 275/40RF20 102(Rear)

### Simplified Size: 275-40-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2018 Lexus LS500 is **245/45RF20 99Y (Front)**. A color-coded explanation of the 2018 Lexus LS500's tire size is shown below.

275 | This number indicates that your tire has a width of 275 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 110 millimeters. |

RF | |

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

102 | This tire has a load index of 102, which means it's capable of carrying a load of 1870 pounds (850 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. |