Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/60r20 vs 35/11.5r20 Tire Comparison Side By Side
  295/60-20 35/11.5-20 Difference
Diameter inches (mm) 33.94 (862) 34.94 (887.6) 1.01 (25.6) 3%
Width inches (mm) 11.61 (295) 11.5 (292) -0.12 (-3) -1%
Circum. inches (mm) 106.62 (2708.05) 109.78 (2788.48) 3.17 (80.42) 3%
Sidewall Height inches (mm) 6.97 (177) 7.47 (189.8) 0.5 (12.8) 7.2%
Revolutions per mile (km) 594.28 (369.27) 577.14 (358.62) -17.14 (-10.65) -2.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.59 mph (33.14 km/h)
25 mph (40.23 km/h)25.74 mph (41.43 km/h)
30 mph (48.28 km/h)30.89 mph (49.71 km/h)
35 mph (56.33 km/h)36.04 mph (58 km/h)
40 mph (64.37 km/h)41.19 mph (66.29 km/h)
45 mph (72.42 km/h)46.34 mph (74.57 km/h)
50 mph (80.47 km/h)51.48 mph (82.86 km/h)
55 mph (88.51 km/h)56.63 mph (91.14 km/h)
60 mph (96.56 km/h)61.78 mph (99.43 km/h)
65 mph (104.61 km/h)66.93 mph (107.71 km/h)
70 mph (112.65 km/h)72.08 mph (116 km/h)
75 mph (120.7 km/h)77.23 mph (124.29 km/h)
80 mph (128.75 km/h)82.38 mph (132.57 km/h)
85 mph (136.79 km/h)87.52 mph (140.86 km/h)
90 mph (144.84 km/h)92.67 mph (149.14 km/h)
95 mph (152.89 km/h)97.82 mph (157.43 km/h)
100 mph (160.93 km/h)102.97 mph (165.71 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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