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 200/60r15 Tire Comparison Side By Side
  200/70-15 200/60-15 Difference
Diameter inches (mm) 26.02 (661) 24.45 (621) -1.57 (-40) -6.1%
Width inches (mm) 7.87 (200) 7.87 (200) 0 (0) 0%
Circum. inches (mm) 81.76 (2076.59) 76.81 (1950.93) -4.95 (-125.66) -6.1%
Sidewall Height inches (mm) 5.51 (140) 4.72 (120) -0.79 (-20) -14.3%
Revolutions per mile (km) 774.99 (481.56) 824.91 (512.58) 49.92 (31.02) 6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.79 mph (30.24 km/h)
25 mph (40.23 km/h)23.49 mph (37.8 km/h)
30 mph (48.28 km/h)28.18 mph (45.36 km/h)
35 mph (56.33 km/h)32.88 mph (52.92 km/h)
40 mph (64.37 km/h)37.58 mph (60.48 km/h)
45 mph (72.42 km/h)42.28 mph (68.04 km/h)
50 mph (80.47 km/h)46.97 mph (75.6 km/h)
55 mph (88.51 km/h)51.67 mph (83.16 km/h)
60 mph (96.56 km/h)56.37 mph (90.72 km/h)
65 mph (104.61 km/h)61.07 mph (98.28 km/h)
70 mph (112.65 km/h)65.76 mph (105.84 km/h)
75 mph (120.7 km/h)70.46 mph (113.4 km/h)
80 mph (128.75 km/h)75.16 mph (120.96 km/h)
85 mph (136.79 km/h)79.86 mph (128.52 km/h)
90 mph (144.84 km/h)84.55 mph (136.08 km/h)
95 mph (152.89 km/h)89.25 mph (143.64 km/h)
100 mph (160.93 km/h)93.95 mph (151.2 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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