Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/55r17 vs 200/45r17 Tire Comparison Side By Side
  200/55-17 200/45-17 Difference
Diameter inches (mm) 25.66 (651.8) 24.09 (611.8) -1.57 (-40) -6.1%
Width inches (mm) 7.87 (200) 7.87 (200) 0 (0) 0%
Circum. inches (mm) 80.62 (2047.69) 75.67 (1922.03) -4.95 (-125.66) -6.1%
Sidewall Height inches (mm) 4.33 (110) 3.54 (90) -0.79 (-20) -18.2%
Revolutions per mile (km) 785.93 (488.35) 837.32 (520.28) 51.38 (31.93) 6.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.77 mph (30.21 km/h)
25 mph (40.23 km/h)23.47 mph (37.76 km/h)
30 mph (48.28 km/h)28.16 mph (45.32 km/h)
35 mph (56.33 km/h)32.85 mph (52.87 km/h)
40 mph (64.37 km/h)37.55 mph (60.42 km/h)
45 mph (72.42 km/h)42.24 mph (67.98 km/h)
50 mph (80.47 km/h)46.93 mph (75.53 km/h)
55 mph (88.51 km/h)51.62 mph (83.08 km/h)
60 mph (96.56 km/h)56.32 mph (90.64 km/h)
65 mph (104.61 km/h)61.01 mph (98.19 km/h)
70 mph (112.65 km/h)65.7 mph (105.74 km/h)
75 mph (120.7 km/h)70.4 mph (113.29 km/h)
80 mph (128.75 km/h)75.09 mph (120.85 km/h)
85 mph (136.79 km/h)79.78 mph (128.4 km/h)
90 mph (144.84 km/h)84.48 mph (135.95 km/h)
95 mph (152.89 km/h)89.17 mph (143.51 km/h)
100 mph (160.93 km/h)93.86 mph (151.06 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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