Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
235/35r17 vs 225/60r17 Tire Comparison Side By Side
  235/35-17 225/60-17 Difference
Diameter inches (mm) 23.48 (596.3) 27.63 (701.8) 4.15 (105.5) 17.7%
Width inches (mm) 9.25 (235) 8.86 (225) -0.39 (-10) -4.3%
Circum. inches (mm) 73.75 (1873.33) 86.8 (2204.77) 13.05 (331.44) 17.7%
Sidewall Height inches (mm) 3.24 (82.25) 5.31 (135) 2.08 (52.75) 64.1%
Revolutions per mile (km) 859.08 (533.81) 729.94 (453.56) -129.14 (-80.25) -15%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.54 mph (37.88 km/h)
25 mph (40.23 km/h)29.42 mph (47.35 km/h)
30 mph (48.28 km/h)35.31 mph (56.82 km/h)
35 mph (56.33 km/h)41.19 mph (66.29 km/h)
40 mph (64.37 km/h)47.08 mph (75.76 km/h)
45 mph (72.42 km/h)52.96 mph (85.23 km/h)
50 mph (80.47 km/h)58.85 mph (94.7 km/h)
55 mph (88.51 km/h)64.73 mph (104.17 km/h)
60 mph (96.56 km/h)70.62 mph (113.64 km/h)
65 mph (104.61 km/h)76.5 mph (123.12 km/h)
70 mph (112.65 km/h)82.38 mph (132.59 km/h)
75 mph (120.7 km/h)88.27 mph (142.06 km/h)
80 mph (128.75 km/h)94.15 mph (151.53 km/h)
85 mph (136.79 km/h)100.04 mph (161 km/h)
90 mph (144.84 km/h)105.92 mph (170.47 km/h)
95 mph (152.89 km/h)111.81 mph (179.94 km/h)
100 mph (160.93 km/h)117.69 mph (189.41 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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