Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/70r15 vs 210/50r15 Tire Comparison Side By Side
  200/70-15 210/50-15 Difference
Diameter inches (mm) 26.02 (661) 23.27 (591) -2.76 (-70) -10.6%
Width inches (mm) 7.87 (200) 8.27 (210) 0.39 (10) 5%
Circum. inches (mm) 81.76 (2076.59) 73.1 (1856.68) -8.66 (-219.91) -10.6%
Sidewall Height inches (mm) 5.51 (140) 4.13 (105) -1.38 (-35) -25%
Revolutions per mile (km) 774.99 (481.56) 866.79 (538.59) 91.79 (57.04) 11.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.88 mph (28.78 km/h)
25 mph (40.23 km/h)22.35 mph (35.97 km/h)
30 mph (48.28 km/h)26.82 mph (43.17 km/h)
35 mph (56.33 km/h)31.29 mph (50.36 km/h)
40 mph (64.37 km/h)35.76 mph (57.56 km/h)
45 mph (72.42 km/h)40.23 mph (64.75 km/h)
50 mph (80.47 km/h)44.7 mph (71.95 km/h)
55 mph (88.51 km/h)49.18 mph (79.14 km/h)
60 mph (96.56 km/h)53.65 mph (86.34 km/h)
65 mph (104.61 km/h)58.12 mph (93.53 km/h)
70 mph (112.65 km/h)62.59 mph (100.72 km/h)
75 mph (120.7 km/h)67.06 mph (107.92 km/h)
80 mph (128.75 km/h)71.53 mph (115.11 km/h)
85 mph (136.79 km/h)76 mph (122.31 km/h)
90 mph (144.84 km/h)80.47 mph (129.5 km/h)
95 mph (152.89 km/h)84.94 mph (136.7 km/h)
100 mph (160.93 km/h)89.41 mph (143.89 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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