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255/45R17 Tire Size
Shop 255/45R17 tires in stock with confirmed size specs, validated diameter in inches, approved rim width range, and verified vehicle fitment before purchase.
Browse and filter 255/45R17 tires from Continental, Pirelli, Yokohama and more to quickly find your ideal fit.
All You Need to Know About 255/45R17 Tires
255/45R17 tires are 255 mm wide, with a 45% aspect ratio and a 17-inch wheel diameter, producing an overall diameter of 26.0 inches and a sidewall height of 4.52 inches.
The 255/45R17 size sits between low-profile performance tires and mid-profile comfort-oriented configurations, combining a wide tread with a moderate sidewall height that supports both lateral stability and controlled ride compliance.
Compared to a shorter size, such as 255/40R17, the 255/45R17 increases both sidewall height and overall diameter. That increase improves impact absorption and slightly raises the vehicle, while reducing wheel rotation speed at a given road speed.
255/45R17 Size Quick Specs
- Approved rim width range: 8.0–9.5"
- Measuring rim width: 8.5"
- Width: 255 mm
- Sidewall height: 114.75 mm
- Overall diameter: 26.0"
- Wheel diameter: 17 in
Note: The calculated overall diameter of 255/45R17 is ≈26.04 inches. A small variation may occur (+/-1%) depending on tread depth and casing structure rather than the nominal size itself. Mounting 255/45R17 within the approved 8.0–9.5" rim width range can slightly influence section shape and sidewall profile without changing the overall diameter. Learn more about Rim Width Ranges and Limits.
255/45R17 Common Vehicle Fitment
255/45R17 is primarily found on performance sedans and coupes where a balance between grip and ride compliance is required. In the U.S. market, it appears mostly on specific trims or staggered configurations rather than as a universal platform size.
- BMW 5 Series (1997–2003, selected fitments); 7 Series (1995–2001, selected trims);
- Mercedes-Benz E-Class (selected configurations); SL500
- Lexus GS (performance-oriented trims)
- Ferrari 456 GT/GTA, 456M
- Cadillac STS (2004-2012) and SLS (2007-2013)
- Ford Mustang SVT Cobra/Cobra R
- Jaguar XJR
- Chevrolet Corvette (1993-1996, including 40th Anniversary Edition)
Because the 255/45R17 size is often used in performance-oriented setups, correct fitment depends on wheel width, offset, and available clearance, especially when used on rear axles in staggered configurations.
255/45R17 Dimensions in Inches
The 255/45R17 tire size measures about 10.04 inches in width, 26.0 inches in overall diameter, and has a sidewall height of about 4.52 inches.
The 4.52-inch sidewall provides more vertical compliance than a 40-series alternative while still maintaining controlled deformation under load. This allows the tire to absorb road irregularities more effectively without significantly reducing steering precision.
255/45R17 in Inches: All Measurements
- Total heigth: ≈26.0"
- Width: 10.04"
- Sidewall height: 4.52"
- Wheel diameter: 17"
- Circumference: ≈81.8"
Most Recommended 255/45R17 Tires
Best tires in 255/45R17 size include:
- 255/45R17 ultra-high-performance all-season tires: Continental ExtremeContact DWS06 Plus
- Affordable 255/45R17 tires 255/45R17: Toyo Extensa HP II
- Premium summer tires 255 45r17: Continental ContiSportContact 5
- 255/45R17 set of 4 (value-focused options): Laufenn S Fit AS (LH01)
Comparison of 255/45R17 With Similar Tire Sizes
255/45R17 sits close enough to both 255/40R17 and 245/45R17 to invite direct comparison, but each pairing reveals a different trade-off - one in sidewall height, the other in section width.
Difference Between 255/45R17 and 255/40R17 Tire Sizes
The 255/40R17 maintains the same 255mm width as the 255/45R17, but sits measurably shorter:
- Width: identical at 255 mm
- Overall diameter: 255/40R17 is ≈1.00 inch (≈4.0%) smaller than 255/45R17
At 4.0%, this gap exceeds the ±3% threshold, ruling out direct substitution between 255/40R17 and 255/45R17. The height difference is meaningful in practice - 255/45R17 adds ride height and reduces rotational speed, while 255/40R17 keeps a lower stance and sharpens steering response through reduced sidewall flex.
Difference Between 255/45R17 vs 245/45R17 Tire Sizes
The 245/45R17 matches 255/45R17 closely in diameter but runs narrower:
- Width: 245/45R17 is 10 mm narrower
- Overall diameter: 245/45R17 is ≈0.35 inches (≈1.4%) smaller than 255/45R17
The diameter gap between 245/45R17 and 255/45R17 sits comfortably within the ±3% range, making these sizes generally interchangeable from a rolling-diameter standpoint. The more consequential change is the narrower section - 10 mm less width in 245/45R17 reduces the contact patch, affects lateral grip under load, and requires confirmation that the replacement falls within the approved rim width range.
Before switching from or to 255/45R17 tires, it is important to understand how the 3% rule works in practice and what additional factors should be verified when changing tire size.
All You Need to Know About 255/45R17 Tires
255/45R17 tires are 255 mm wide, with a 45% aspect ratio and a 17-inch wheel diameter, producing an overall diameter of 26.0 inches and a sidewall height of 4.52 inches.
The 255/45R17 size sits between low-profile performance tires and mid-profile comfort-oriented configurations, combining a wide tread with a moderate sidewall height that supports both lateral stability and controlled ride compliance.
Compared to a shorter size, such as 255/40R17, the 255/45R17 increases both sidewall height and overall diameter. That increase improves impact absorption and slightly raises the vehicle, while reducing wheel rotation speed at a given road speed.
255/45R17 Size Quick Specs
- Approved rim width range: 8.0–9.5"
- Measuring rim width: 8.5"
- Width: 255 mm
- Sidewall height: 114.75 mm
- Overall diameter: 26.0"
- Wheel diameter: 17 in
Note: The calculated overall diameter of 255/45R17 is ≈26.04 inches. A small variation may occur (+/-1%) depending on tread depth and casing structure rather than the nominal size itself. Mounting 255/45R17 within the approved 8.0–9.5" rim width range can slightly influence section shape and sidewall profile without changing the overall diameter. Learn more about Rim Width Ranges and Limits.
255/45R17 Common Vehicle Fitment
255/45R17 is primarily found on performance sedans and coupes where a balance between grip and ride compliance is required. In the U.S. market, it appears mostly on specific trims or staggered configurations rather than as a universal platform size.
- BMW 5 Series (1997–2003, selected fitments); 7 Series (1995–2001, selected trims);
- Mercedes-Benz E-Class (selected configurations); SL500
- Lexus GS (performance-oriented trims)
- Ferrari 456 GT/GTA, 456M
- Cadillac STS (2004-2012) and SLS (2007-2013)
- Ford Mustang SVT Cobra/Cobra R
- Jaguar XJR
- Chevrolet Corvette (1993-1996, including 40th Anniversary Edition)
Because the 255/45R17 size is often used in performance-oriented setups, correct fitment depends on wheel width, offset, and available clearance, especially when used on rear axles in staggered configurations.
255/45R17 Dimensions in Inches
The 255/45R17 tire size measures about 10.04 inches in width, 26.0 inches in overall diameter, and has a sidewall height of about 4.52 inches.
The 4.52-inch sidewall provides more vertical compliance than a 40-series alternative while still maintaining controlled deformation under load. This allows the tire to absorb road irregularities more effectively without significantly reducing steering precision.
255/45R17 in Inches: All Measurements
- Total heigth: ≈26.0"
- Width: 10.04"
- Sidewall height: 4.52"
- Wheel diameter: 17"
- Circumference: ≈81.8"
Most Recommended 255/45R17 Tires
Best tires in 255/45R17 size include:
- 255/45R17 ultra-high-performance all-season tires: Continental ExtremeContact DWS06 Plus
- Affordable 255/45R17 tires 255/45R17: Toyo Extensa HP II
- Premium summer tires 255 45r17: Continental ContiSportContact 5
- 255/45R17 set of 4 (value-focused options): Laufenn S Fit AS (LH01)
Comparison of 255/45R17 With Similar Tire Sizes
255/45R17 sits close enough to both 255/40R17 and 245/45R17 to invite direct comparison, but each pairing reveals a different trade-off - one in sidewall height, the other in section width.
Difference Between 255/45R17 and 255/40R17 Tire Sizes
The 255/40R17 maintains the same 255mm width as the 255/45R17, but sits measurably shorter:
- Width: identical at 255 mm
- Overall diameter: 255/40R17 is ≈1.00 inch (≈4.0%) smaller than 255/45R17
At 4.0%, this gap exceeds the ±3% threshold, ruling out direct substitution between 255/40R17 and 255/45R17. The height difference is meaningful in practice - 255/45R17 adds ride height and reduces rotational speed, while 255/40R17 keeps a lower stance and sharpens steering response through reduced sidewall flex.
Difference Between 255/45R17 vs 245/45R17 Tire Sizes
The 245/45R17 matches 255/45R17 closely in diameter but runs narrower:
- Width: 245/45R17 is 10 mm narrower
- Overall diameter: 245/45R17 is ≈0.35 inches (≈1.4%) smaller than 255/45R17
The diameter gap between 245/45R17 and 255/45R17 sits comfortably within the ±3% range, making these sizes generally interchangeable from a rolling-diameter standpoint. The more consequential change is the narrower section - 10 mm less width in 245/45R17 reduces the contact patch, affects lateral grip under load, and requires confirmation that the replacement falls within the approved rim width range.
Before switching from or to 255/45R17 tires, it is important to understand how the 3% rule works in practice and what additional factors should be verified when changing tire size.
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