Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/25r22 vs 275/25r22 Tire Comparison Side By Side
  285/25-22 275/25-22 Difference
Diameter inches (mm) 27.61 (701.3) 27.41 (696.3) -0.2 (-5) -0.7%
Width inches (mm) 11.22 (285) 10.83 (275) -0.39 (-10) -3.5%
Circum. inches (mm) 86.74 (2203.2) 86.12 (2187.49) -0.62 (-15.71) -0.7%
Sidewall Height inches (mm) 2.81 (71.25) 2.71 (68.75) -0.1 (-2.5) -3.5%
Revolutions per mile (km) 730.46 (453.88) 735.7 (457.14) 5.25 (3.26) 0.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.86 mph (31.96 km/h)
25 mph (40.23 km/h)24.82 mph (39.95 km/h)
30 mph (48.28 km/h)29.79 mph (47.94 km/h)
35 mph (56.33 km/h)34.75 mph (55.93 km/h)
40 mph (64.37 km/h)39.71 mph (63.91 km/h)
45 mph (72.42 km/h)44.68 mph (71.9 km/h)
50 mph (80.47 km/h)49.64 mph (79.89 km/h)
55 mph (88.51 km/h)54.61 mph (87.88 km/h)
60 mph (96.56 km/h)59.57 mph (95.87 km/h)
65 mph (104.61 km/h)64.54 mph (103.86 km/h)
70 mph (112.65 km/h)69.5 mph (111.85 km/h)
75 mph (120.7 km/h)74.47 mph (119.84 km/h)
80 mph (128.75 km/h)79.43 mph (127.83 km/h)
85 mph (136.79 km/h)84.39 mph (135.82 km/h)
90 mph (144.84 km/h)89.36 mph (143.81 km/h)
95 mph (152.89 km/h)94.32 mph (151.8 km/h)
100 mph (160.93 km/h)99.29 mph (159.79 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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