275/40R17 Tire Size

All You Need to Know About 275/40R17 Tires

275/40R17 tires are 275 mm wide, use a 40-series aspect ratio, and fit 17-inch wheels. This size has a calculated overall diameter of approximately 25.7 inches and fits an approved 9.0–11.0 inch rim width range, making it a low-profile performance size used on 17-inch muscle-car, sports-car, and staggered performance-wheel applications rather than SUV or truck setups. 

Unlike P275/40R17, this page covers the no-prefix (P) metric version of the size - the designation used across the majority of UHP and performance tire lines - and unlike 275/40ZR17, it carries no ZR speed-category marking. 

275/40R17 Size Quick Specs

• Overall diameter: ≈25.7 in
• Rim width range: 9.0–11.0 in
• Wheel diameter: 17 in 
• Sidewall height: ≈110 mm
• Section width: 275 mm

Note: The calculated overall diameter of 275/40R17 is ≈25.7 inches. Actual mounted diameter may vary slightly by brand and tire model.

275/40R17 Common Vehicle Fitments 

275/40R17 is a real performance fitment, appearing primarily as a rear tire in staggered 17-inch setups on wider aftermarket 17x9 performance-wheel packages. It is not a broad everyday size; it belongs in the 17-inch UHP and staggered-fitment performance class, where wheel width, offset, and chassis clearance are as relevant as the numeric tire size itself. 

Confirmed 275/40R17 Vehicle Fitments

• Ford Mustang SVT Cobra (2001, 2003–2004) - staggered rear 17" fitment on 17x9 wheels
• Chevrolet Camaro Z28/SS (1999) - staggered rear 17" fitment
• Pontiac Firebird Trans Am WS6 (2002) - rear 17" fitment
• Dodge Viper RT/10 (1997) - front 275/40-17 fitment

Beyond confirmed OEM applications, 275/40R17 size is also used on modified rear-drive performance builds running 17x9 wheels. In all cases, offset and wheel well clearance should be verified at the vehicle level before mounting.

275/40R17 Dimensions in Inches

A 275/40R17 tire is approximately 25.7 inches tall, 10.8 inches wide, and has a sidewall height of about 4.3 inches.

The short 4.3 sidewall in a 275/40R17 tire is the reason this size is tied to performance-oriented 17-inch fitments: it helps sharpen steering response and reduce sidewall flex compared with taller 17-inch tire sizes, but it also rides firmer and leaves less room for wheel-width mismatch. 

275/40R17 in Inches: All Measurements

• Overall diameter: ≈25.7″
• Sidewall height: ≈4.33″
• Section width: ≈10.83″
• Circumference: ≈80.6–80.7″ 

275/40R17 in inches: 25.7″ × 10.8″ R17

Most Recommended 275/40R17 Tires

275/40R17 size is most commonly sold in ultra-high-performance all-season and max-performance summer categories. Current 275/40R17 listings at major retailers include products like the Sumitomo HTR A/S P03 and Continental ExtremeContact Sport 02, which shows that the interest in this tire is road-performance use rather than strip-only use. 

Best Tires In 275/40R17 Size

• 275/40R17 ultra-high-performance all-season tires: Falken Azenis FK460 A/S, Toyo Extensa HP II
• 275/40R17 max-performance summer tires: General G-Max RS
• 275/40R17 performance rear tires for 17-inch staggered setups: Nexen N'Fera SU1

Comparison of 275/40R17 With Similar Tire Sizes

Comparing 275/40R17 against the two sizes buyers most commonly cross-reference - 265/40R17 and 285/40R17 - shows that a 10 mm width step in either direction carries real consequences for rim fitment, speedometer calibration, and clearance. Same aspect ratio, same wheel diameter, meaningfully different specs.

Difference Between 275/40R17 and 285/40R17 

The 285/40R17 is 10 mm wider and about 0.3 inches larger in overall diameter (approximately a 1.2% increase in rollout). 

On a 17x9.5 wheel, 285/40R17 is commonly used on the rear of rear-wheel-drive performance cars, while front fitment may require additional clearance depending on suspension geometry, offset, and tire design. 

The 285 size is typically specified for wider rims (commonly 9.5 inches or more), compared to around 9.0 inches for the 275.

Difference Between 275/40R17 and 265/40R17

The 265/40R17 is 10 mm narrower and approximately 0.3 inches smaller in overall diameter - a 1.2–1.3% difference in rollout relative to the 275/40R17. Both sizes share a 9.0-inch minimum rim width, but the approved ranges differ: the 265/40R17 tops out at 10.5 inches while the 275/40R17 extends to 11.0 inches. 

The 265/40R17 is commonly used as a front tire in staggered setups paired with a 275/40R17 rear, though exact fitment depends on the vehicle.