P275/40R17 Tire Size

All You Need to Know About P275/40R17 Tires

P275/40R17 tires have 275 mm in section width, use a 40% aspect ratio, and fit 17-inch wheels. The calculated diameter is approximately 25.7 inches (mainstream UHP products spec at 25.63 - 25.67 inches with drag-radial constructions reaching up to 25.8 inches). 

The P275/40R17 size appears on performance coupes, muscle cars, and high-output street builds where a wide, low-profile 17-inch fitment is required. 

The P275/40R17 is physically identical to the 275/40R17 (without P) and 275/40ZR17; all three share the same 275 mm width and 25.7-inch diameter. 

The "P" in P275/40R17 simply identifies it as a P-metric tire, meaning its load and inflation are calculated using American (TRA) passenger car standards rather than European (Euro-metric) or high-speed (ZR) conventions. 

The P-metric version of 275/40R17 is specifically optimized for U.S. passenger vehicles like Corvettes or Mustangs, whereas the versions without the "P" are often built to European or ultra-high-performance specs that handle slightly higher pressures.

P275/40R17 Size Quick Specs

• Nominal overall diameter: ≈25.7 in
• Sidewall height: ≈110 mm
• Section width: ≈10.9-11.0 
• Rim width range: 9.0-11.0 in
• Wheel diameter: 17 in 

Note: The calculated overall diameter of P275/40R17 is ≈25.7 inches. Actual mounted diameter can vary slightly (±0.1–0.3 inches) by tire line and construction.

P275/40R17 Common Vehicle Fitments and Applications

P275/40R17 is a confirmed factory application of the Chevrolet Corvette C4, specifically the ZR-1 and select performance editions from 1988 to 1996, where it appeared as a front fitment. That makes the C4 the anchor vehicle for this designation and separates it clearly from the muscle car fitments documented under 275/40ZR17.

Beyond the Corvette, P275/40R17 is primarily an aftermarket and street/strip size, used on modified rear-drive performance platforms where a wide, low-profile 17-inch drag-radial fitment is required.

Confirmed P275/40R17 Fitments

• Chevrolet Corvette C4 ZR-1 and performance editions (1988–1996) - front fitment
• Modified Chevrolet Camaro, Pontiac Firebird, and similar rear-drive muscle car platforms - aftermarket rear fitment

P275/40R17 Height and Width in Inches

A P275/40R17 tire is approximately 10.7 inches wide, 25.7 inches tall, and carries a sidewall height of roughly 4.33 inches.

P275/40R17 in Inches: All Measurements

• Nominal overall diameter: ≈25.7″
• Sidewall height: ≈4.33″
• Section width: ≈10.9″ to 11.0″
• Circumference: nominally ≈80.7″ 

P275/40R17 in inches: 25.7″ × 10.9″ R17

Most Recommended P275/40R17 Tires

The most relevant targets in P275/40R17 size are P275/40R17 drag radials, P275/40R17 street/strip tires, and P275/40R17 ultra-high-performance rear tires for modified muscle cars. Current listings from Nitto, Hoosier, Mickey Thompson, Toyo, and Falken support that positioning.