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 265/70r17 Tire Comparison Side By Side
  365/75-16 265/70-17 Difference
Diameter inches (mm) 37.56 (953.9) 31.61 (802.8) -5.95 (-151.1) -15.8%
Width inches (mm) 14.37 (365) 10.43 (265) -3.94 (-100) -27.4%
Circum. inches (mm) 117.98 (2996.77) 99.29 (2522.07) -18.69 (-474.69) -15.8%
Sidewall Height inches (mm) 10.78 (273.75) 7.3 (185.5) -3.47 (-88.25) -32.2%
Revolutions per mile (km) 537.03 (333.69) 638.1 (396.5) 101.08 (62.81) 18.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)16.83 mph (27.09 km/h)
25 mph (40.23 km/h)21.04 mph (33.86 km/h)
30 mph (48.28 km/h)25.25 mph (40.63 km/h)
35 mph (56.33 km/h)29.46 mph (47.4 km/h)
40 mph (64.37 km/h)33.66 mph (54.18 km/h)
45 mph (72.42 km/h)37.87 mph (60.95 km/h)
50 mph (80.47 km/h)42.08 mph (67.72 km/h)
55 mph (88.51 km/h)46.29 mph (74.49 km/h)
60 mph (96.56 km/h)50.5 mph (81.27 km/h)
65 mph (104.61 km/h)54.7 mph (88.04 km/h)
70 mph (112.65 km/h)58.91 mph (94.81 km/h)
75 mph (120.7 km/h)63.12 mph (101.58 km/h)
80 mph (128.75 km/h)67.33 mph (108.35 km/h)
85 mph (136.79 km/h)71.54 mph (115.13 km/h)
90 mph (144.84 km/h)75.74 mph (121.9 km/h)
95 mph (152.89 km/h)79.95 mph (128.67 km/h)
100 mph (160.93 km/h)84.16 mph (135.44 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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