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 285/35r24 Tire Comparison Side By Side
  275/40-22 285/35-24 Difference
Diameter inches (mm) 30.66 (778.8) 31.85 (809.1) 1.19 (30.3) 3.9%
Width inches (mm) 10.83 (275) 11.22 (285) 0.39 (10) 3.6%
Circum. inches (mm) 96.33 (2446.67) 100.07 (2541.86) 3.75 (95.19) 3.9%
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) 633.14 (393.41) -24.63 (-15.31) -3.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.78 mph (33.44 km/h)
25 mph (40.23 km/h)25.97 mph (41.8 km/h)
30 mph (48.28 km/h)31.17 mph (50.16 km/h)
35 mph (56.33 km/h)36.36 mph (58.52 km/h)
40 mph (64.37 km/h)41.56 mph (66.88 km/h)
45 mph (72.42 km/h)46.75 mph (75.24 km/h)
50 mph (80.47 km/h)51.95 mph (83.6 km/h)
55 mph (88.51 km/h)57.14 mph (91.96 km/h)
60 mph (96.56 km/h)62.33 mph (100.32 km/h)
65 mph (104.61 km/h)67.53 mph (108.68 km/h)
70 mph (112.65 km/h)72.72 mph (117.04 km/h)
75 mph (120.7 km/h)77.92 mph (125.4 km/h)
80 mph (128.75 km/h)83.11 mph (133.76 km/h)
85 mph (136.79 km/h)88.31 mph (142.12 km/h)
90 mph (144.84 km/h)93.5 mph (150.48 km/h)
95 mph (152.89 km/h)98.7 mph (158.84 km/h)
100 mph (160.93 km/h)103.89 mph (167.2 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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