Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
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33/14.5r22 vs 285/50r22 Tire Comparison Side By Side
  33/14.5-22 285/50-22 Difference
Diameter inches (mm) 33.01 (838.48) 33.22 (843.8) 0.21 (5.32) 0.6%
Width inches (mm) 14.49 (368) 11.22 (285) -3.27 (-83) -22.6%
Circum. inches (mm) 103.71 (2634.16) 104.37 (2650.88) 0.66 (16.71) 0.6%
Sidewall Height inches (mm) 5.51 (139.84) 5.61 (142.5) 0.1 (2.66) 1.9%
Revolutions per mile (km) 610.95 (379.63) 607.1 (377.23) -3.85 (-2.39) -0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.13 mph (32.39 km/h)
25 mph (40.23 km/h)25.16 mph (40.49 km/h)
30 mph (48.28 km/h)30.19 mph (48.59 km/h)
35 mph (56.33 km/h)35.22 mph (56.68 km/h)
40 mph (64.37 km/h)40.25 mph (64.78 km/h)
45 mph (72.42 km/h)45.29 mph (72.88 km/h)
50 mph (80.47 km/h)50.32 mph (80.98 km/h)
55 mph (88.51 km/h)55.35 mph (89.08 km/h)
60 mph (96.56 km/h)60.38 mph (97.17 km/h)
65 mph (104.61 km/h)65.41 mph (105.27 km/h)
70 mph (112.65 km/h)70.44 mph (113.37 km/h)
75 mph (120.7 km/h)75.48 mph (121.47 km/h)
80 mph (128.75 km/h)80.51 mph (129.56 km/h)
85 mph (136.79 km/h)85.54 mph (137.66 km/h)
90 mph (144.84 km/h)90.57 mph (145.76 km/h)
95 mph (152.89 km/h)95.6 mph (153.86 km/h)
100 mph (160.93 km/h)100.63 mph (161.96 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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