# 2021 Porsche 718 Boxster Tire Size

Your Porsche was manufactured with different tire sizes. To determine the best tire size for your specific 2021 Porsche 718 Boxster, we first need to determine your rim size. Please review the information below.

## How to Determine Rim Size

Check your existing tires. Your Porsche 718 Boxster'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

### 2021 Porsche 718 Boxster

The original tire size for your 2021 Porsche 718 Boxster is listed below. Tap on the box to view a color-coded explanation of your Porsche 718 Boxster's' tire size.

## 265/45ZR18 101(Rear)

### Simplified Size: 235-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/45ZR18 94Y (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

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

18 | The tire size was designed to fit rims or wheels that are 18 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. | ||||||

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. | ||||||

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 119 millimeters. | ||||||

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

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. |

## 235/45ZR18 94(Front)

### Simplified Size: 265-45-18

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/45ZR18 94Y (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||

94 | This tire has a load index of 94, which means it's capable of carrying a load of 1474 pounds (670 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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. | ||||||

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 105 millimeters. | ||||||

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

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. |

## 19-Inch Rims

### 2021 Porsche 718 Boxster

The original tire size for your 2021 Porsche 718 Boxster is listed below. Tap on the box to view a color-coded explanation of your Porsche 718 Boxster's' tire size.

## 265/40ZR19 (98 )(Rear)

### Simplified Size: 235-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/40ZR19 92(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

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

19 | The tire size was designed to fit rims or wheels that are 19 inches in diameter. | ||||||

98 | This tire has a load index of 98, which means it's capable of carrying a load of 1650 pounds (750 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

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. | ||||||

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 106 millimeters. | ||||||

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

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. |

## 235/40ZR19 (92 )(Front)

### Simplified Size: 265-40-19

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/40ZR19 92(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

19 | The tire size was designed to fit rims or wheels that are 19 inches in diameter. | ||||||

92 | This tire has a load index of 92, which means it's capable of carrying a load of 1386 pounds (630 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

Z | |||||||

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 94 millimeters. | ||||||

R |
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## 20-Inch Rims

### 2021 Porsche 718 Boxster

Your 2021 Porsche 718 Boxster 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 2021 Porsche 718 Boxster.

Trim Options:

### 25 YearsBaseBaseGTS 4.0SSTT

## 265/35ZR20 (95 )(Rear)

### Simplified Size: 235-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/35ZR20 88(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

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

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

95 | This tire has a load index of 95, which means it's capable of carrying a load of 1518 pounds (690 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

Z | |||||||

35 | This number means that your tire has an aspect ratio of 35%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width. In this case, the sidewall height works out to be 92 millimeters. | ||||||

R |
| ||||||

Trim Options:

### 25 YearsBaseBaseGTS 4.0SSTT

## 235/35ZR20 (88 )(Front)

### Simplified Size: 265-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/35ZR20 88(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

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

88 | This tire has a load index of 88, which means it's capable of carrying a load of 1232 pounds (560 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

Z | |||||||

35 | This number means that your tire has an aspect ratio of 35%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width. In this case, the sidewall height works out to be 82 millimeters. | ||||||

R |
| ||||||

Trim Options:

### 25 YearsBaseBaseGTS 4.0SSTT

## 265/35ZR20/XL (99 )(Rear)

### Simplified Size: 235-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/35ZR20/XL 92(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

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

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

XL | The mark of XL means extra load. A tire with this designation can handle higher inflation pressures than a regular tire, which increases its maximum load. | ||||||

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. | ||||||

Z | |||||||

35 | This number means that your tire has an aspect ratio of 35%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width. In this case, the sidewall height works out to be 92 millimeters. | ||||||

R |
| ||||||

Trim Options:

### 25 YearsBaseBaseGTS 4.0SSTT

## 235/35ZR20/XL (92 )(Front)

### Simplified Size: 265-35-20

Simplified size is useful for shopping and buying tires.

The original tire size for your 2021 Porsche 718 Boxster is **235/35ZR20/XL 92(Y) (Front)**. A color-coded explanation of the 2021 Porsche 718 Boxster's tire size is shown below.

235 | This number indicates that your tire has a width of 235 millimeters. | ||||||

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

XL | The mark of XL means extra load. A tire with this designation can handle higher inflation pressures than a regular tire, which increases its maximum load. | ||||||

92 | This tire has a load index of 92, which means it's capable of carrying a load of 1386 pounds (630 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||

Z | |||||||

35 | This number means that your tire has an aspect ratio of 35%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 35% of the width. In this case, the sidewall height works out to be 82 millimeters. | ||||||

R |
| ||||||