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 200/45r17 Tire Comparison Side By Side
  200/50-17 200/45-17 Difference
Diameter inches (mm) 24.87 (631.8) 24.09 (611.8) -0.79 (-20) -3.2%
Width inches (mm) 7.87 (200) 7.87 (200) 0 (0) 0%
Circum. inches (mm) 78.14 (1984.86) 75.67 (1922.03) -2.47 (-62.83) -3.2%
Sidewall Height inches (mm) 3.94 (100) 3.54 (90) -0.39 (-10) -10%
Revolutions per mile (km) 810.81 (503.81) 837.32 (520.28) 26.51 (16.47) 3.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.37 mph (31.17 km/h)
25 mph (40.23 km/h)24.21 mph (38.96 km/h)
30 mph (48.28 km/h)29.05 mph (46.75 km/h)
35 mph (56.33 km/h)33.89 mph (54.54 km/h)
40 mph (64.37 km/h)38.73 mph (62.34 km/h)
45 mph (72.42 km/h)43.58 mph (70.13 km/h)
50 mph (80.47 km/h)48.42 mph (77.92 km/h)
55 mph (88.51 km/h)53.26 mph (85.71 km/h)
60 mph (96.56 km/h)58.1 mph (93.5 km/h)
65 mph (104.61 km/h)62.94 mph (101.3 km/h)
70 mph (112.65 km/h)67.78 mph (109.09 km/h)
75 mph (120.7 km/h)72.63 mph (116.88 km/h)
80 mph (128.75 km/h)77.47 mph (124.67 km/h)
85 mph (136.79 km/h)82.31 mph (132.46 km/h)
90 mph (144.84 km/h)87.15 mph (140.26 km/h)
95 mph (152.89 km/h)91.99 mph (148.05 km/h)
100 mph (160.93 km/h)96.83 mph (155.84 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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