Porsche Carrera GT Tire Sizes & Rim Dimensions by Year and Trim
The Porsche Carrera GT features distinctive tire sizes and rim dimensions that vary slightly based on model year and trim. Typically, this high-performance supercar uses larger rear rims with wider tires compared to the front to optimize traction and handling.\n\nFront rims for the Carrera GT commonly measure 18×8.5 inches, fitted with tire sizes marked as 255/40 ZR 18, while rear rims are generally 19×13 inches with tires sized 335/30 ZR 19. These dimensions remain consistent throughout the production years, emphasizing the car's balance between grip and agility.\n\nUnderstanding tire size markings: the first number indicates tire width in millimeters, the second is the aspect ratio as a percentage of width, followed by construction type (ZR for high-speed radial), and the rim diameter. Comparing trims involves checking for subtle variations in these sizes, although the Carrera GT trims typically share the same wheel setup.\n\nFor enthusiasts or professionals selecting wheel and tire replacements or upgrades, it’s essential to match both rim width and diameter precisely. Ensuring compatibility maintains vehicle performance, safety, and preserves the original driving experience of the Porsche Carrera GT.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Porsche Carrera GT 5.7 | 2006 | 265/35R19 | 9.5" × 19" |
| Porsche Carrera GT 5.7 | 2005 | 265/35R19 | 9.5" × 19" |
| Porsche Carrera GT 5.7 | 2004 | 265/35R19 | 9.5" × 19" |
| Porsche Carrera GT 5.7 | 2003 | 265/35R19 | 9.5" × 19" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Porsche Carrera GT.
FAQ
- What tire sizes does the Porsche Carrera GT use?
- The front tires are usually 255/40 ZR18, and the rear tires are 335/30 ZR19.
- Do Carrera GT trims differ in rim dimensions?
- No, most trims share the same rim widths and diameters: 18×8.5 inches front and 19×13 inches rear.
- How do tire size markings help in selecting replacements?
- They indicate tire width, aspect ratio, construction, and rim diameter to ensure proper fit and performance.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |






Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |
