Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
335/35r17 vs 385/35r17 Tire Comparison Side By Side
  335/35-17 385/35-17 Difference
Diameter inches (mm) 26.23 (666.3) 27.61 (701.3) 1.38 (35) 5.3%
Width inches (mm) 13.19 (335) 15.16 (385) 1.97 (50) 14.9%
Circum. inches (mm) 82.41 (2093.24) 86.74 (2203.2) 4.33 (109.96) 5.3%
Sidewall Height inches (mm) 4.62 (117.25) 5.31 (134.75) 0.69 (17.5) 14.9%
Revolutions per mile (km) 768.83 (477.73) 730.46 (453.88) -38.37 (-23.84) -5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.05 mph (33.88 km/h)
25 mph (40.23 km/h)26.31 mph (42.35 km/h)
30 mph (48.28 km/h)31.58 mph (50.82 km/h)
35 mph (56.33 km/h)36.84 mph (59.29 km/h)
40 mph (64.37 km/h)42.1 mph (67.76 km/h)
45 mph (72.42 km/h)47.36 mph (76.22 km/h)
50 mph (80.47 km/h)52.63 mph (84.69 km/h)
55 mph (88.51 km/h)57.89 mph (93.16 km/h)
60 mph (96.56 km/h)63.15 mph (101.63 km/h)
65 mph (104.61 km/h)68.41 mph (110.1 km/h)
70 mph (112.65 km/h)73.68 mph (118.57 km/h)
75 mph (120.7 km/h)78.94 mph (127.04 km/h)
80 mph (128.75 km/h)84.2 mph (135.51 km/h)
85 mph (136.79 km/h)89.46 mph (143.98 km/h)
90 mph (144.84 km/h)94.73 mph (152.45 km/h)
95 mph (152.89 km/h)99.99 mph (160.92 km/h)
100 mph (160.93 km/h)105.25 mph (169.39 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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