Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/80r22.5 vs 315/75r22.5 Tire Comparison Side By Side
  295/80-22.5 315/75-22.5 Difference
Diameter inches (mm) 41.08 (1043.5) 41.1 (1044) 0.02 (0.5) 0%
Width inches (mm) 11.61 (295) 12.4 (315) 0.79 (20) 6.8%
Circum. inches (mm) 129.07 (3278.25) 129.13 (3279.82) 0.06 (1.57) 0%
Sidewall Height inches (mm) 9.29 (236) 9.3 (236.25) 0.01 (0.25) 0.1%
Revolutions per mile (km) 490.92 (305.04) 490.68 (304.89) -0.24 (-0.15) -0%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.01 mph (32.2 km/h)
25 mph (40.23 km/h)25.01 mph (40.25 km/h)
30 mph (48.28 km/h)30.01 mph (48.3 km/h)
35 mph (56.33 km/h)35.02 mph (56.35 km/h)
40 mph (64.37 km/h)40.02 mph (64.4 km/h)
45 mph (72.42 km/h)45.02 mph (72.46 km/h)
50 mph (80.47 km/h)50.02 mph (80.51 km/h)
55 mph (88.51 km/h)55.03 mph (88.56 km/h)
60 mph (96.56 km/h)60.03 mph (96.61 km/h)
65 mph (104.61 km/h)65.03 mph (104.66 km/h)
70 mph (112.65 km/h)70.03 mph (112.71 km/h)
75 mph (120.7 km/h)75.04 mph (120.76 km/h)
80 mph (128.75 km/h)80.04 mph (128.81 km/h)
85 mph (136.79 km/h)85.04 mph (136.86 km/h)
90 mph (144.84 km/h)90.04 mph (144.91 km/h)
95 mph (152.89 km/h)95.05 mph (152.96 km/h)
100 mph (160.93 km/h)100.05 mph (161.01 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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