Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/50r17 vs 220/45r17 Tire Comparison Side By Side
  200/50-17 220/45-17 Difference
Diameter inches (mm) 24.87 (631.8) 24.8 (629.8) -0.08 (-2) -0.3%
Width inches (mm) 7.87 (200) 8.66 (220) 0.79 (20) 10%
Circum. inches (mm) 78.14 (1984.86) 77.9 (1978.58) -0.25 (-6.28) -0.3%
Sidewall Height inches (mm) 3.94 (100) 3.9 (99) -0.04 (-1) -1%
Revolutions per mile (km) 810.81 (503.81) 813.39 (505.41) 2.57 (1.6) 0.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.94 mph (32.09 km/h)
25 mph (40.23 km/h)24.92 mph (40.11 km/h)
30 mph (48.28 km/h)29.91 mph (48.13 km/h)
35 mph (56.33 km/h)34.89 mph (56.15 km/h)
40 mph (64.37 km/h)39.87 mph (64.17 km/h)
45 mph (72.42 km/h)44.86 mph (72.19 km/h)
50 mph (80.47 km/h)49.84 mph (80.21 km/h)
55 mph (88.51 km/h)54.83 mph (88.23 km/h)
60 mph (96.56 km/h)59.81 mph (96.26 km/h)
65 mph (104.61 km/h)64.79 mph (104.28 km/h)
70 mph (112.65 km/h)69.78 mph (112.3 km/h)
75 mph (120.7 km/h)74.76 mph (120.32 km/h)
80 mph (128.75 km/h)79.75 mph (128.34 km/h)
85 mph (136.79 km/h)84.73 mph (136.36 km/h)
90 mph (144.84 km/h)89.72 mph (144.38 km/h)
95 mph (152.89 km/h)94.7 mph (152.4 km/h)
100 mph (160.93 km/h)99.68 mph (160.43 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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