Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/55r22 vs 33/12.5r22 Tire Comparison Side By Side
  265/55-22 33/12.5-22 Difference
Diameter inches (mm) 33.48 (850.3) 33.02 (838.64) -0.46 (-11.66) -1.4%
Width inches (mm) 10.43 (265) 12.52 (318) 2.09 (53) 20%
Circum. inches (mm) 105.17 (2671.3) 103.73 (2634.67) -1.44 (-36.63) -1.4%
Sidewall Height inches (mm) 5.74 (145.75) 5.51 (139.92) -0.23 (-5.83) -4%
Revolutions per mile (km) 602.46 (374.35) 610.83 (379.55) 8.38 (5.2) 1.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.73 mph (31.75 km/h)
25 mph (40.23 km/h)24.66 mph (39.68 km/h)
30 mph (48.28 km/h)29.59 mph (47.62 km/h)
35 mph (56.33 km/h)34.52 mph (55.55 km/h)
40 mph (64.37 km/h)39.45 mph (63.49 km/h)
45 mph (72.42 km/h)44.38 mph (71.43 km/h)
50 mph (80.47 km/h)49.31 mph (79.36 km/h)
55 mph (88.51 km/h)54.25 mph (87.3 km/h)
60 mph (96.56 km/h)59.18 mph (95.24 km/h)
65 mph (104.61 km/h)64.11 mph (103.17 km/h)
70 mph (112.65 km/h)69.04 mph (111.11 km/h)
75 mph (120.7 km/h)73.97 mph (119.05 km/h)
80 mph (128.75 km/h)78.9 mph (126.98 km/h)
85 mph (136.79 km/h)83.83 mph (134.92 km/h)
90 mph (144.84 km/h)88.77 mph (142.86 km/h)
95 mph (152.89 km/h)93.7 mph (150.79 km/h)
100 mph (160.93 km/h)98.63 mph (158.73 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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