Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/65r16 vs 225/60r17 Tire Comparison Side By Side
  225/65-16 225/60-17 Difference
Diameter inches (mm) 27.52 (698.9) 27.63 (701.8) 0.11 (2.9) 0.4%
Width inches (mm) 8.86 (225) 8.86 (225) 0 (0) 0%
Circum. inches (mm) 86.44 (2195.66) 86.8 (2204.77) 0.36 (9.11) 0.4%
Sidewall Height inches (mm) 5.76 (146.25) 5.31 (135) -0.44 (-11.25) -7.7%
Revolutions per mile (km) 732.97 (455.44) 729.94 (453.56) -3.03 (-1.88) -0.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.08 mph (32.32 km/h)
25 mph (40.23 km/h)25.1 mph (40.4 km/h)
30 mph (48.28 km/h)30.12 mph (48.48 km/h)
35 mph (56.33 km/h)35.15 mph (56.56 km/h)
40 mph (64.37 km/h)40.17 mph (64.64 km/h)
45 mph (72.42 km/h)45.19 mph (72.72 km/h)
50 mph (80.47 km/h)50.21 mph (80.8 km/h)
55 mph (88.51 km/h)55.23 mph (88.88 km/h)
60 mph (96.56 km/h)60.25 mph (96.96 km/h)
65 mph (104.61 km/h)65.27 mph (105.04 km/h)
70 mph (112.65 km/h)70.29 mph (113.12 km/h)
75 mph (120.7 km/h)75.31 mph (121.2 km/h)
80 mph (128.75 km/h)80.33 mph (129.28 km/h)
85 mph (136.79 km/h)85.35 mph (137.36 km/h)
90 mph (144.84 km/h)90.37 mph (145.44 km/h)
95 mph (152.89 km/h)95.39 mph (153.52 km/h)
100 mph (160.93 km/h)100.41 mph (161.6 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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