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 325/35r17 Tire Comparison Side By Side
  335/35-17 325/35-17 Difference
Diameter inches (mm) 26.23 (666.3) 25.96 (659.3) -0.28 (-7) -1.1%
Width inches (mm) 13.19 (335) 12.8 (325) -0.39 (-10) -3%
Circum. inches (mm) 82.41 (2093.24) 81.55 (2071.25) -0.87 (-21.99) -1.1%
Sidewall Height inches (mm) 4.62 (117.25) 4.48 (113.75) -0.14 (-3.5) -3%
Revolutions per mile (km) 768.83 (477.73) 776.99 (482.8) 8.16 (5.07) 1.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.79 mph (31.85 km/h)
25 mph (40.23 km/h)24.74 mph (39.81 km/h)
30 mph (48.28 km/h)29.68 mph (47.77 km/h)
35 mph (56.33 km/h)34.63 mph (55.74 km/h)
40 mph (64.37 km/h)39.58 mph (63.7 km/h)
45 mph (72.42 km/h)44.53 mph (71.66 km/h)
50 mph (80.47 km/h)49.47 mph (79.62 km/h)
55 mph (88.51 km/h)54.42 mph (87.58 km/h)
60 mph (96.56 km/h)59.37 mph (95.55 km/h)
65 mph (104.61 km/h)64.32 mph (103.51 km/h)
70 mph (112.65 km/h)69.26 mph (111.47 km/h)
75 mph (120.7 km/h)74.21 mph (119.43 km/h)
80 mph (128.75 km/h)79.16 mph (127.4 km/h)
85 mph (136.79 km/h)84.11 mph (135.36 km/h)
90 mph (144.84 km/h)89.05 mph (143.32 km/h)
95 mph (152.89 km/h)94 mph (151.28 km/h)
100 mph (160.93 km/h)98.95 mph (159.24 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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