Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/60r16 vs 225/60r17 Tire Comparison Side By Side
  225/60-16 225/60-17 Difference
Diameter inches (mm) 26.63 (676.4) 27.63 (701.8) 1 (25.4) 3.8%
Width inches (mm) 8.86 (225) 8.86 (225) 0 (0) 0%
Circum. inches (mm) 83.66 (2124.97) 86.8 (2204.77) 3.14 (79.8) 3.8%
Sidewall Height inches (mm) 5.31 (135) 5.31 (135) 0 (0) 0%
Revolutions per mile (km) 757.35 (470.59) 729.94 (453.56) -27.41 (-17.03) -3.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.75 mph (33.4 km/h)
25 mph (40.23 km/h)25.94 mph (41.74 km/h)
30 mph (48.28 km/h)31.13 mph (50.09 km/h)
35 mph (56.33 km/h)36.31 mph (58.44 km/h)
40 mph (64.37 km/h)41.5 mph (66.79 km/h)
45 mph (72.42 km/h)46.69 mph (75.14 km/h)
50 mph (80.47 km/h)51.88 mph (83.49 km/h)
55 mph (88.51 km/h)57.07 mph (91.84 km/h)
60 mph (96.56 km/h)62.25 mph (100.19 km/h)
65 mph (104.61 km/h)67.44 mph (108.54 km/h)
70 mph (112.65 km/h)72.63 mph (116.88 km/h)
75 mph (120.7 km/h)77.82 mph (125.23 km/h)
80 mph (128.75 km/h)83 mph (133.58 km/h)
85 mph (136.79 km/h)88.19 mph (141.93 km/h)
90 mph (144.84 km/h)93.38 mph (150.28 km/h)
95 mph (152.89 km/h)98.57 mph (158.63 km/h)
100 mph (160.93 km/h)103.76 mph (166.98 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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