Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
220/60r16 vs 240/70r10 Tire Comparison Side By Side
  220/60-16 240/70-10 Difference
Diameter inches (mm) 26.39 (670.4) 23.23 (590) -3.17 (-80.4) -12%
Width inches (mm) 8.66 (220) 9.45 (240) 0.79 (20) 9.1%
Circum. inches (mm) 82.92 (2106.12) 72.97 (1853.54) -9.94 (-252.58) -12%
Sidewall Height inches (mm) 5.2 (132) 6.61 (168) 1.42 (36) 27.3%
Revolutions per mile (km) 764.13 (474.81) 868.25 (539.51) 104.13 (64.7) 13.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.6 mph (28.33 km/h)
25 mph (40.23 km/h)22 mph (35.41 km/h)
30 mph (48.28 km/h)26.4 mph (42.49 km/h)
35 mph (56.33 km/h)30.8 mph (49.57 km/h)
40 mph (64.37 km/h)35.2 mph (56.65 km/h)
45 mph (72.42 km/h)39.6 mph (63.74 km/h)
50 mph (80.47 km/h)44 mph (70.82 km/h)
55 mph (88.51 km/h)48.4 mph (77.9 km/h)
60 mph (96.56 km/h)52.8 mph (84.98 km/h)
65 mph (104.61 km/h)57.2 mph (92.06 km/h)
70 mph (112.65 km/h)61.61 mph (99.14 km/h)
75 mph (120.7 km/h)66.01 mph (106.23 km/h)
80 mph (128.75 km/h)70.41 mph (113.31 km/h)
85 mph (136.79 km/h)74.81 mph (120.39 km/h)
90 mph (144.84 km/h)79.21 mph (127.47 km/h)
95 mph (152.89 km/h)83.61 mph (134.55 km/h)
100 mph (160.93 km/h)88.01 mph (141.63 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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