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 365/40r17 Tire Comparison Side By Side
  335/35-17 365/40-17 Difference
Diameter inches (mm) 26.23 (666.3) 28.5 (723.8) 2.26 (57.5) 8.6%
Width inches (mm) 13.19 (335) 14.37 (365) 1.18 (30) 9%
Circum. inches (mm) 82.41 (2093.24) 89.52 (2273.88) 7.11 (180.64) 8.6%
Sidewall Height inches (mm) 4.62 (117.25) 5.75 (146) 1.13 (28.75) 24.5%
Revolutions per mile (km) 768.83 (477.73) 707.75 (439.78) -61.08 (-37.95) -7.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.73 mph (34.96 km/h)
25 mph (40.23 km/h)27.16 mph (43.71 km/h)
30 mph (48.28 km/h)32.59 mph (52.45 km/h)
35 mph (56.33 km/h)38.02 mph (61.19 km/h)
40 mph (64.37 km/h)43.45 mph (69.93 km/h)
45 mph (72.42 km/h)48.88 mph (78.67 km/h)
50 mph (80.47 km/h)54.31 mph (87.41 km/h)
55 mph (88.51 km/h)59.75 mph (96.15 km/h)
60 mph (96.56 km/h)65.18 mph (104.89 km/h)
65 mph (104.61 km/h)70.61 mph (113.63 km/h)
70 mph (112.65 km/h)76.04 mph (122.38 km/h)
75 mph (120.7 km/h)81.47 mph (131.12 km/h)
80 mph (128.75 km/h)86.9 mph (139.86 km/h)
85 mph (136.79 km/h)92.34 mph (148.6 km/h)
90 mph (144.84 km/h)97.77 mph (157.34 km/h)
95 mph (152.89 km/h)103.2 mph (166.08 km/h)
100 mph (160.93 km/h)108.63 mph (174.82 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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