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 205/35r17 Tire Comparison Side By Side
  235/35-17 205/35-17 Difference
Diameter inches (mm) 23.48 (596.3) 22.65 (575.3) -0.83 (-21) -3.5%
Width inches (mm) 9.25 (235) 8.07 (205) -1.18 (-30) -12.8%
Circum. inches (mm) 73.75 (1873.33) 71.16 (1807.36) -2.6 (-65.97) -3.5%
Sidewall Height inches (mm) 3.24 (82.25) 2.82 (71.75) -0.41 (-10.5) -12.8%
Revolutions per mile (km) 859.08 (533.81) 890.44 (553.29) 31.36 (19.49) 3.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.3 mph (31.05 km/h)
25 mph (40.23 km/h)24.12 mph (38.82 km/h)
30 mph (48.28 km/h)28.94 mph (46.58 km/h)
35 mph (56.33 km/h)33.77 mph (54.34 km/h)
40 mph (64.37 km/h)38.59 mph (62.11 km/h)
45 mph (72.42 km/h)43.42 mph (69.87 km/h)
50 mph (80.47 km/h)48.24 mph (77.63 km/h)
55 mph (88.51 km/h)53.06 mph (85.4 km/h)
60 mph (96.56 km/h)57.89 mph (93.16 km/h)
65 mph (104.61 km/h)62.71 mph (100.92 km/h)
70 mph (112.65 km/h)67.53 mph (108.69 km/h)
75 mph (120.7 km/h)72.36 mph (116.45 km/h)
80 mph (128.75 km/h)77.18 mph (124.21 km/h)
85 mph (136.79 km/h)82.01 mph (131.98 km/h)
90 mph (144.84 km/h)86.83 mph (139.74 km/h)
95 mph (152.89 km/h)91.65 mph (147.5 km/h)
100 mph (160.93 km/h)96.48 mph (155.27 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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