# 2004 Lexus IS300 Tire Size

Your Lexus was manufactured with different tire sizes. To determine the best tire size for your specific 2004 Lexus IS300, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your Lexus IS300'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.

## 16-Inch Rims

### 2004 Lexus IS300

The original tire size for your 2004 Lexus IS300 is listed below. Tap on the box to view a color-coded explanation of your Lexus IS300's' tire size.

## P205/55R16 89

### Simplified Size: 205-55-16

Simplified size is useful for shopping and buying tires.

The original tire size for your 2004 Lexus IS300 is **P205/55R16 89V**. A color-coded explanation of the 2004 Lexus IS300's tire size is shown below.

P | This letter denotes the intended use of the tire.
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205 | This number indicates that your tire has a width of 205 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 112 millimeters. | ||||||

R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
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16 | The tire size was designed to fit rims or wheels that are 16 inches in diameter. | ||||||

89 | This tire has a load index of 89, which means it's capable of carrying a load of 1276 pounds (580 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. |

## 17-Inch Rims

### 2004 Lexus IS300

There are multiple tire sizes for your 2004 Lexus IS300 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 2004 Lexus IS300.

Trim Options:

### Sportcross

## 215/45ZR17(Front)

### Simplified Size: 215-45-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2004 Lexus IS300 is **215/45ZR17 (Front)**. A color-coded explanation of the 2004 Lexus IS300's tire size is shown below.

215 | This number indicates that your tire has a width of 215 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 96 millimeters. | ||||||

Z | This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating. | ||||||

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. |

Trim Options:

### Sportcross

## 225/45ZR17(Rear)

### Simplified Size: 225-45-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2004 Lexus IS300 is **215/45ZR17 (Front)**. A color-coded explanation of the 2004 Lexus IS300's tire size is shown below.

225 | This number indicates that your tire has a width of 225 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 101 millimeters. | ||||||

Z | This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating. | ||||||

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. |

## 215/45ZR17 87

### Simplified Size: 215-45-17

Simplified size is useful for shopping and buying tires.

The original tire size for your 2004 Lexus IS300 is **215/45ZR17 87W**. A color-coded explanation of the 2004 Lexus IS300's tire size is shown below.

215 | This number indicates that your tire has a width of 215 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 96 millimeters. | ||||||

Z | This tire has a speed class of Z, which means it's part of an elite speed class of 149 mph or more (240 km/h). A tire's speed class is less specific than the speed rating. | ||||||

R |
| ||||||

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

87 | This tire has a load index of 87, which means it's capable of carrying a load of 1199 pounds (545 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. |