Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/60r17 vs 140/70r17 Tire Comparison Side By Side
  130/60-17 140/70-17 Difference
Diameter inches (mm) 23.14 (587.8) 24.72 (627.8) 1.57 (40) 6.8%
Width inches (mm) 5.12 (130) 5.51 (140) 0.39 (10) 7.7%
Circum. inches (mm) 72.7 (1846.63) 77.65 (1972.29) 4.95 (125.66) 6.8%
Sidewall Height inches (mm) 3.07 (78) 3.86 (98) 0.79 (20) 25.6%
Revolutions per mile (km) 871.5 (541.53) 815.98 (507.02) -55.53 (-34.5) -6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.36 mph (34.38 km/h)
25 mph (40.23 km/h)26.7 mph (42.97 km/h)
30 mph (48.28 km/h)32.04 mph (51.57 km/h)
35 mph (56.33 km/h)37.38 mph (60.16 km/h)
40 mph (64.37 km/h)42.72 mph (68.75 km/h)
45 mph (72.42 km/h)48.06 mph (77.35 km/h)
50 mph (80.47 km/h)53.4 mph (85.94 km/h)
55 mph (88.51 km/h)58.74 mph (94.54 km/h)
60 mph (96.56 km/h)64.08 mph (103.13 km/h)
65 mph (104.61 km/h)69.42 mph (111.73 km/h)
70 mph (112.65 km/h)74.76 mph (120.32 km/h)
75 mph (120.7 km/h)80.1 mph (128.91 km/h)
80 mph (128.75 km/h)85.44 mph (137.51 km/h)
85 mph (136.79 km/h)90.78 mph (146.1 km/h)
90 mph (144.84 km/h)96.12 mph (154.7 km/h)
95 mph (152.89 km/h)101.46 mph (163.29 km/h)
100 mph (160.93 km/h)106.81 mph (171.89 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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