Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/55r17 vs 215/60r17 Tire Comparison Side By Side
  215/55-17 215/60-17 Difference
Diameter inches (mm) 26.31 (668.3) 27.16 (689.8) 0.85 (21.5) 3.2%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 82.66 (2099.53) 85.32 (2167.07) 2.66 (67.54) 3.2%
Sidewall Height inches (mm) 4.66 (118.25) 5.08 (129) 0.42 (10.75) 9.1%
Revolutions per mile (km) 766.53 (476.3) 742.64 (461.45) -23.89 (-14.85) -3.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.64 mph (33.22 km/h)
25 mph (40.23 km/h)25.8 mph (41.53 km/h)
30 mph (48.28 km/h)30.97 mph (49.83 km/h)
35 mph (56.33 km/h)36.13 mph (58.14 km/h)
40 mph (64.37 km/h)41.29 mph (66.44 km/h)
45 mph (72.42 km/h)46.45 mph (74.75 km/h)
50 mph (80.47 km/h)51.61 mph (83.06 km/h)
55 mph (88.51 km/h)56.77 mph (91.36 km/h)
60 mph (96.56 km/h)61.93 mph (99.67 km/h)
65 mph (104.61 km/h)67.09 mph (107.97 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
2.35 2.73 2.94 3.07 3.21 3.31 3.42 3.55 3.73 3.91 4.11 4.27 4.56 4.88 5.13 5.29 5.38 5.71 6.17 7.17
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