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 235/50r17 Tire Comparison Side By Side
  235/35-17 235/50-17 Difference
Diameter inches (mm) 23.48 (596.3) 26.25 (666.8) 2.78 (70.5) 11.8%
Width inches (mm) 9.25 (235) 9.25 (235) 0 (0) 0%
Circum. inches (mm) 73.75 (1873.33) 82.47 (2094.81) 8.72 (221.48) 11.8%
Sidewall Height inches (mm) 3.24 (82.25) 4.63 (117.5) 1.39 (35.25) 42.9%
Revolutions per mile (km) 859.08 (533.81) 768.25 (477.37) -90.83 (-56.44) -10.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.36 mph (35.99 km/h)
25 mph (40.23 km/h)27.96 mph (44.99 km/h)
30 mph (48.28 km/h)33.55 mph (53.99 km/h)
35 mph (56.33 km/h)39.14 mph (62.99 km/h)
40 mph (64.37 km/h)44.73 mph (71.98 km/h)
45 mph (72.42 km/h)50.32 mph (80.98 km/h)
50 mph (80.47 km/h)55.91 mph (89.98 km/h)
55 mph (88.51 km/h)61.5 mph (98.98 km/h)
60 mph (96.56 km/h)67.09 mph (107.98 km/h)
65 mph (104.61 km/h)72.68 mph (116.98 km/h)
70 mph (112.65 km/h)78.28 mph (125.97 km/h)
75 mph (120.7 km/h)83.87 mph (134.97 km/h)
80 mph (128.75 km/h)89.46 mph (143.97 km/h)
85 mph (136.79 km/h)95.05 mph (152.97 km/h)
90 mph (144.84 km/h)100.64 mph (161.97 km/h)
95 mph (152.89 km/h)106.23 mph (170.96 km/h)
100 mph (160.93 km/h)111.82 mph (179.96 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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