Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
33/14.5r22 vs 285/55r22 Tire Comparison Side By Side
  33/14.5-22 285/55-22 Difference
Diameter inches (mm) 33.01 (838.48) 34.34 (872.3) 1.33 (33.82) 4%
Width inches (mm) 14.49 (368) 11.22 (285) -3.27 (-83) -22.6%
Circum. inches (mm) 103.71 (2634.16) 107.89 (2740.41) 4.18 (106.25) 4%
Sidewall Height inches (mm) 5.51 (139.84) 6.17 (156.75) 0.67 (16.91) 12.1%
Revolutions per mile (km) 610.95 (379.63) 587.26 (364.91) -23.69 (-14.72) -3.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.81 mph (33.49 km/h)
25 mph (40.23 km/h)26.01 mph (41.86 km/h)
30 mph (48.28 km/h)31.21 mph (50.23 km/h)
35 mph (56.33 km/h)36.41 mph (58.6 km/h)
40 mph (64.37 km/h)41.61 mph (66.97 km/h)
45 mph (72.42 km/h)46.82 mph (75.34 km/h)
50 mph (80.47 km/h)52.02 mph (83.71 km/h)
55 mph (88.51 km/h)57.22 mph (92.08 km/h)
60 mph (96.56 km/h)62.42 mph (100.46 km/h)
65 mph (104.61 km/h)67.62 mph (108.83 km/h)
70 mph (112.65 km/h)72.82 mph (117.2 km/h)
75 mph (120.7 km/h)78.03 mph (125.57 km/h)
80 mph (128.75 km/h)83.23 mph (133.94 km/h)
85 mph (136.79 km/h)88.43 mph (142.31 km/h)
90 mph (144.84 km/h)93.63 mph (150.68 km/h)
95 mph (152.89 km/h)98.83 mph (159.05 km/h)
100 mph (160.93 km/h)104.03 mph (167.43 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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