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 325/40r17 Tire Comparison Side By Side
  335/35-17 325/40-17 Difference
Diameter inches (mm) 26.23 (666.3) 27.24 (691.8) 1 (25.5) 3.8%
Width inches (mm) 13.19 (335) 12.8 (325) -0.39 (-10) -3%
Circum. inches (mm) 82.41 (2093.24) 85.57 (2173.35) 3.15 (80.11) 3.8%
Sidewall Height inches (mm) 4.62 (117.25) 5.12 (130) 0.5 (12.75) 10.9%
Revolutions per mile (km) 768.83 (477.73) 740.49 (460.12) -28.34 (-17.61) -3.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.77 mph (33.42 km/h)
25 mph (40.23 km/h)25.96 mph (41.77 km/h)
30 mph (48.28 km/h)31.15 mph (50.13 km/h)
35 mph (56.33 km/h)36.34 mph (58.48 km/h)
40 mph (64.37 km/h)41.53 mph (66.84 km/h)
45 mph (72.42 km/h)46.72 mph (75.19 km/h)
50 mph (80.47 km/h)51.91 mph (83.55 km/h)
55 mph (88.51 km/h)57.1 mph (91.9 km/h)
60 mph (96.56 km/h)62.3 mph (100.26 km/h)
65 mph (104.61 km/h)67.49 mph (108.61 km/h)
70 mph (112.65 km/h)72.68 mph (116.97 km/h)
75 mph (120.7 km/h)77.87 mph (125.32 km/h)
80 mph (128.75 km/h)83.06 mph (133.68 km/h)
85 mph (136.79 km/h)88.25 mph (142.03 km/h)
90 mph (144.84 km/h)93.44 mph (150.38 km/h)
95 mph (152.89 km/h)98.64 mph (158.74 km/h)
100 mph (160.93 km/h)103.83 mph (167.09 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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