Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/40r22 vs 285/35r22 Tire Comparison Side By Side
  265/40-22 285/35-22 Difference
Diameter inches (mm) 30.35 (770.8) 29.85 (758.3) -0.49 (-12.5) -1.6%
Width inches (mm) 10.43 (265) 11.22 (285) 0.79 (20) 7.5%
Circum. inches (mm) 95.34 (2421.54) 93.79 (2382.27) -1.55 (-39.27) -1.6%
Sidewall Height inches (mm) 4.17 (106) 3.93 (99.75) -0.25 (-6.25) -5.9%
Revolutions per mile (km) 664.6 (412.96) 675.55 (419.77) 10.96 (6.81) 1.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.68 mph (31.66 km/h)
25 mph (40.23 km/h)24.59 mph (39.58 km/h)
30 mph (48.28 km/h)29.51 mph (47.5 km/h)
35 mph (56.33 km/h)34.43 mph (55.41 km/h)
40 mph (64.37 km/h)39.35 mph (63.33 km/h)
45 mph (72.42 km/h)44.27 mph (71.25 km/h)
50 mph (80.47 km/h)49.19 mph (79.16 km/h)
55 mph (88.51 km/h)54.11 mph (87.08 km/h)
60 mph (96.56 km/h)59.03 mph (94.99 km/h)
65 mph (104.61 km/h)63.95 mph (102.91 km/h)
70 mph (112.65 km/h)68.86 mph (110.83 km/h)
75 mph (120.7 km/h)73.78 mph (118.74 km/h)
80 mph (128.75 km/h)78.7 mph (126.66 km/h)
85 mph (136.79 km/h)83.62 mph (134.58 km/h)
90 mph (144.84 km/h)88.54 mph (142.49 km/h)
95 mph (152.89 km/h)93.46 mph (150.41 km/h)
100 mph (160.93 km/h)98.38 mph (158.32 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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