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 255/55r24.5 Tire Comparison Side By Side
  33/14.5-22 255/55-24.5 Difference
Diameter inches (mm) 33.01 (838.48) 35.54 (902.8) 2.53 (64.32) 7.7%
Width inches (mm) 14.49 (368) 10.04 (255) -4.45 (-113) -30.7%
Circum. inches (mm) 103.71 (2634.16) 111.66 (2836.23) 7.96 (202.07) 7.7%
Sidewall Height inches (mm) 5.51 (139.84) 5.52 (140.25) 0.02 (0.41) 0.3%
Revolutions per mile (km) 610.95 (379.63) 567.42 (352.58) -43.53 (-27.05) -7.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.53 mph (34.66 km/h)
25 mph (40.23 km/h)26.92 mph (43.32 km/h)
30 mph (48.28 km/h)32.3 mph (51.98 km/h)
35 mph (56.33 km/h)37.68 mph (60.65 km/h)
40 mph (64.37 km/h)43.07 mph (69.31 km/h)
45 mph (72.42 km/h)48.45 mph (77.98 km/h)
50 mph (80.47 km/h)53.84 mph (86.64 km/h)
55 mph (88.51 km/h)59.22 mph (95.3 km/h)
60 mph (96.56 km/h)64.6 mph (103.97 km/h)
65 mph (104.61 km/h)69.99 mph (112.63 km/h)
70 mph (112.65 km/h)75.37 mph (121.3 km/h)
75 mph (120.7 km/h)80.75 mph (129.96 km/h)
80 mph (128.75 km/h)86.14 mph (138.62 km/h)
85 mph (136.79 km/h)91.52 mph (147.29 km/h)
90 mph (144.84 km/h)96.9 mph (155.95 km/h)
95 mph (152.89 km/h)102.29 mph (164.62 km/h)
100 mph (160.93 km/h)107.67 mph (173.28 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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