Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/40r22 vs 285/35r22 Tire Comparison Side By Side
  275/40-22 285/35-22 Difference
Diameter inches (mm) 30.66 (778.8) 29.85 (758.3) -0.81 (-20.5) -2.6%
Width inches (mm) 10.83 (275) 11.22 (285) 0.39 (10) 3.6%
Circum. inches (mm) 96.33 (2446.67) 93.79 (2382.27) -2.54 (-64.4) -2.6%
Sidewall Height inches (mm) 4.33 (110) 3.93 (99.75) -0.4 (-10.25) -9.3%
Revolutions per mile (km) 657.77 (408.72) 675.55 (419.77) 17.78 (11.05) 2.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.47 mph (31.34 km/h)
25 mph (40.23 km/h)24.34 mph (39.17 km/h)
30 mph (48.28 km/h)29.21 mph (47.01 km/h)
35 mph (56.33 km/h)34.08 mph (54.84 km/h)
40 mph (64.37 km/h)38.95 mph (62.68 km/h)
45 mph (72.42 km/h)43.82 mph (70.51 km/h)
50 mph (80.47 km/h)48.68 mph (78.35 km/h)
55 mph (88.51 km/h)53.55 mph (86.18 km/h)
60 mph (96.56 km/h)58.42 mph (94.02 km/h)
65 mph (104.61 km/h)63.29 mph (101.85 km/h)
70 mph (112.65 km/h)68.16 mph (109.69 km/h)
75 mph (120.7 km/h)73.03 mph (117.52 km/h)
80 mph (128.75 km/h)77.89 mph (125.36 km/h)
85 mph (136.79 km/h)82.76 mph (133.19 km/h)
90 mph (144.84 km/h)87.63 mph (141.03 km/h)
95 mph (152.89 km/h)92.5 mph (148.86 km/h)
100 mph (160.93 km/h)97.37 mph (156.7 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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