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 200/50r17 Tire Comparison Side By Side
  200/70-15 200/50-17 Difference
Diameter inches (mm) 26.02 (661) 24.87 (631.8) -1.15 (-29.2) -4.4%
Width inches (mm) 7.87 (200) 7.87 (200) 0 (0) 0%
Circum. inches (mm) 81.76 (2076.59) 78.14 (1984.86) -3.61 (-91.73) -4.4%
Sidewall Height inches (mm) 5.51 (140) 3.94 (100) -1.57 (-40) -28.6%
Revolutions per mile (km) 774.99 (481.56) 810.81 (503.81) 35.82 (22.26) 4.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.12 mph (30.77 km/h)
25 mph (40.23 km/h)23.9 mph (38.46 km/h)
30 mph (48.28 km/h)28.67 mph (46.15 km/h)
35 mph (56.33 km/h)33.45 mph (53.84 km/h)
40 mph (64.37 km/h)38.23 mph (61.53 km/h)
45 mph (72.42 km/h)43.01 mph (69.22 km/h)
50 mph (80.47 km/h)47.79 mph (76.91 km/h)
55 mph (88.51 km/h)52.57 mph (84.6 km/h)
60 mph (96.56 km/h)57.35 mph (92.3 km/h)
65 mph (104.61 km/h)62.13 mph (99.99 km/h)
70 mph (112.65 km/h)66.91 mph (107.68 km/h)
75 mph (120.7 km/h)71.69 mph (115.37 km/h)
80 mph (128.75 km/h)76.47 mph (123.06 km/h)
85 mph (136.79 km/h)81.25 mph (130.75 km/h)
90 mph (144.84 km/h)86.02 mph (138.44 km/h)
95 mph (152.89 km/h)90.8 mph (146.13 km/h)
100 mph (160.93 km/h)95.58 mph (153.83 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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