Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/70r20 vs 295/60r20 Tire Comparison Side By Side
  295/70-20 295/60-20 Difference
Diameter inches (mm) 36.26 (921) 33.94 (862) -2.32 (-59) -6.4%
Width inches (mm) 11.61 (295) 11.61 (295) 0 (0) 0%
Circum. inches (mm) 113.91 (2893.41) 106.62 (2708.05) -7.3 (-185.35) -6.4%
Sidewall Height inches (mm) 8.13 (206.5) 6.97 (177) -1.16 (-29.5) -14.3%
Revolutions per mile (km) 556.21 (345.61) 594.28 (369.27) 38.07 (23.66) 6.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.72 mph (30.13 km/h)
25 mph (40.23 km/h)23.4 mph (37.66 km/h)
30 mph (48.28 km/h)28.08 mph (45.19 km/h)
35 mph (56.33 km/h)32.76 mph (52.72 km/h)
40 mph (64.37 km/h)37.44 mph (60.25 km/h)
45 mph (72.42 km/h)42.12 mph (67.78 km/h)
50 mph (80.47 km/h)46.8 mph (75.31 km/h)
55 mph (88.51 km/h)51.48 mph (82.84 km/h)
60 mph (96.56 km/h)56.16 mph (90.38 km/h)
65 mph (104.61 km/h)60.84 mph (97.91 km/h)
70 mph (112.65 km/h)65.52 mph (105.44 km/h)
75 mph (120.7 km/h)70.2 mph (112.97 km/h)
80 mph (128.75 km/h)74.88 mph (120.5 km/h)
85 mph (136.79 km/h)79.55 mph (128.03 km/h)
90 mph (144.84 km/h)84.23 mph (135.56 km/h)
95 mph (152.89 km/h)88.91 mph (143.09 km/h)
100 mph (160.93 km/h)93.59 mph (150.63 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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