2004 Porsche 911 Tire Size
Your Porsche was manufactured with different tire sizes. To determine the best tire size for your specific 2004 Porsche 911, we first need to determine your rim size. Please review the information below.
How to Determine Rim Size
Check your existing tires. Your Porsche 911'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
2004 Porsche 911
The original tire size for your 2004 Porsche 911 is listed below. Tap on the box to view a color-coded explanation of your Porsche 911's' tire size.
Trim Options:
CarreraCarrera 4Targa
255/40ZR17(Rear)
Simplified Size: 205-50-17
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 205/50ZR17 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
255 | This number indicates that your tire has a width of 255 millimeters. | ||||||
17 | The tire size was designed to fit rims or wheels that are 17 inches in diameter. | ||||||
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 102 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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Trim Options:
CarreraCarrera 4Targa
205/50ZR17(Front)
Simplified Size: 255-40-17
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 205/50ZR17 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
205 | This number indicates that your tire has a width of 205 millimeters. | ||||||
17 | The tire size was designed to fit rims or wheels that are 17 inches in diameter. | ||||||
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. | ||||||
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 102 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-Inch Rims
2004 Porsche 911
There are multiple tire sizes for your 2004 Porsche 911 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 Porsche 911.
Trim Options:
Carrera (Winter Tires)Carrera 4S (Winter Tires)GT2 (Winter Tires)Turbo (Winter Tires)
265/35R18 93(Rear)
Simplified Size: 225-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40R18 88H (Front). A color-coded explanation of the 2004 Porsche 911'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. | ||||||
93 | This tire has a load index of 93, which means it's capable of carrying a load of 1430 pounds (650 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
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 | 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 H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
Trim Options:
Carrera (Winter Tires)Carrera 4S (Winter Tires)GT2 (Winter Tires)Turbo (Winter Tires)
225/40R18 88(Front)
Simplified Size: 265-35-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40R18 88H (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
225 | This number indicates that your tire has a width of 225 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 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. | ||||||
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 90 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 H, which means 130 mph (210 km/h) is the maximum speed that can be sustained for 10 minutes. A higher speed becomes dangerous. |
Trim Options:
GT3 (Winter Tires)
265/35R18/RF 97(Rear)
Simplified Size: 225-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40R18/RF 92V (Front). A color-coded explanation of the 2004 Porsche 911'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. | ||||||
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. | ||||||
97 | This tire has a load index of 97, which means it's capable of carrying a load of 1606 pounds (730 kg) or less. A higher number means the tire can carry more weight. A lower number means the opposite. | ||||||
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 | 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 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:
GT3 (Winter Tires)
225/40R18/RF 92(Front)
Simplified Size: 265-35-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40R18/RF 92V (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
225 | This number indicates that your tire has a width of 225 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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. | ||||||
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. | ||||||
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 90 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 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:
Carrera
285/30ZR18(Rear)
Simplified Size: 225-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
285 | This number indicates that your tire has a width of 285 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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. | ||||||
30 | This number means that your tire has an aspect ratio of 30%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 30% of the width. In this case, the sidewall height works out to be 85 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
Carrera
225/40ZR18(Front)
Simplified Size: 285-30-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
225 | This number indicates that your tire has a width of 225 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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 90 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
CarreraCarrera 4STurbo
295/30ZR18(Rear)
Simplified Size: 225-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
295 | This number indicates that your tire has a width of 295 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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. | ||||||
30 | This number means that your tire has an aspect ratio of 30%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 30% of the width. In this case, the sidewall height works out to be 88 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
CarreraCarrera 4STurbo
225/40ZR18(Front)
Simplified Size: 295-30-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 225/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
225 | This number indicates that your tire has a width of 225 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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 90 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
GT2
315/30ZR18(Rear)
Simplified Size: 235-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 235/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
315 | This number indicates that your tire has a width of 315 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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. | ||||||
30 | This number means that your tire has an aspect ratio of 30%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 30% of the width. In this case, the sidewall height works out to be 94 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
GT2
235/40ZR18(Front)
Simplified Size: 315-30-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 235/40ZR18 (Front). A color-coded explanation of the 2004 Porsche 911'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. | ||||||
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 94 millimeters. | ||||||
R | This letter denotes how your tire was constructed. Radial is the standard construction method for about 99% of all tires sold today.
|
Trim Options:
40th Anniversary EditionGT3
295/30ZR18/RF 98(Rear)
Simplified Size: 235-40-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 235/40ZR18 91Y (Front). A color-coded explanation of the 2004 Porsche 911's tire size is shown below.
295 | This number indicates that your tire has a width of 295 millimeters. | ||||||
18 | The tire size was designed to fit rims or wheels that are 18 inches in diameter. | ||||||
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. | ||||||
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. | ||||||
30 | This number means that your tire has an aspect ratio of 30%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 30% of the width. In this case, the sidewall height works out to be 88 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. |
Trim Options:
40th Anniversary EditionGT3
235/40ZR18 91(Front)
Simplified Size: 295-30-18
Simplified size is useful for shopping and buying tires.
The original tire size for your 2004 Porsche 911 is 235/40ZR18 91Y (Front). A color-coded explanation of the 2004 Porsche 911'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. | ||||||
91 | This tire has a load index of 91, which means it's capable of carrying a load of 1353 pounds (615 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 94 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. |