Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
365/75r16 vs 350/70r16 Tire Comparison Side By Side
  365/75-16 350/70-16 Difference
Diameter inches (mm) 37.56 (953.9) 35.29 (896.4) -2.26 (-57.5) -6%
Width inches (mm) 14.37 (365) 13.78 (350) -0.59 (-15) -4.1%
Circum. inches (mm) 117.98 (2996.77) 110.87 (2816.12) -7.11 (-180.64) -6%
Sidewall Height inches (mm) 10.78 (273.75) 9.65 (245) -1.13 (-28.75) -10.5%
Revolutions per mile (km) 537.03 (333.69) 571.47 (355.1) 34.45 (21.4) 6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.79 mph (30.25 km/h)
25 mph (40.23 km/h)23.49 mph (37.81 km/h)
30 mph (48.28 km/h)28.19 mph (45.37 km/h)
35 mph (56.33 km/h)32.89 mph (52.93 km/h)
40 mph (64.37 km/h)37.59 mph (60.49 km/h)
45 mph (72.42 km/h)42.29 mph (68.06 km/h)
50 mph (80.47 km/h)46.99 mph (75.62 km/h)
55 mph (88.51 km/h)51.68 mph (83.18 km/h)
60 mph (96.56 km/h)56.38 mph (90.74 km/h)
65 mph (104.61 km/h)61.08 mph (98.3 km/h)
70 mph (112.65 km/h)65.78 mph (105.86 km/h)
75 mph (120.7 km/h)70.48 mph (113.43 km/h)
80 mph (128.75 km/h)75.18 mph (120.99 km/h)
85 mph (136.79 km/h)79.88 mph (128.55 km/h)
90 mph (144.84 km/h)84.57 mph (136.11 km/h)
95 mph (152.89 km/h)89.27 mph (143.67 km/h)
100 mph (160.93 km/h)93.97 mph (151.23 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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