Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/55r16 vs 200/45r16 Tire Comparison Side By Side
  200/55-16 200/45-16 Difference
Diameter inches (mm) 24.66 (626.4) 23.09 (586.4) -1.57 (-40) -6.4%
Width inches (mm) 7.87 (200) 7.87 (200) 0 (0) 0%
Circum. inches (mm) 77.48 (1967.89) 72.53 (1842.23) -4.95 (-125.66) -6.4%
Sidewall Height inches (mm) 4.33 (110) 3.54 (90) -0.79 (-20) -18.2%
Revolutions per mile (km) 817.8 (508.16) 873.58 (542.82) 55.78 (34.66) 6.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.72 mph (30.13 km/h)
25 mph (40.23 km/h)23.4 mph (37.66 km/h)
30 mph (48.28 km/h)28.08 mph (45.2 km/h)
35 mph (56.33 km/h)32.77 mph (52.73 km/h)
40 mph (64.37 km/h)37.45 mph (60.26 km/h)
45 mph (72.42 km/h)42.13 mph (67.8 km/h)
50 mph (80.47 km/h)46.81 mph (75.33 km/h)
55 mph (88.51 km/h)51.49 mph (82.86 km/h)
60 mph (96.56 km/h)56.17 mph (90.39 km/h)
65 mph (104.61 km/h)60.85 mph (97.93 km/h)
70 mph (112.65 km/h)65.53 mph (105.46 km/h)
75 mph (120.7 km/h)70.21 mph (112.99 km/h)
80 mph (128.75 km/h)74.89 mph (120.53 km/h)
85 mph (136.79 km/h)79.57 mph (128.06 km/h)
90 mph (144.84 km/h)84.25 mph (135.59 km/h)
95 mph (152.89 km/h)88.93 mph (143.13 km/h)
100 mph (160.93 km/h)93.61 mph (150.66 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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