Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
35/12r16 vs 285/85r16 Tire Comparison Side By Side
  35/12-16 285/85-16 Difference
Diameter inches (mm) 34.97 (888.3) 35.07 (890.9) 0.1 (2.6) 0.3%
Width inches (mm) 12.01 (305) 11.22 (285) -0.79 (-20) -6.6%
Circum. inches (mm) 109.87 (2790.68) 110.19 (2798.84) 0.32 (8.17) 0.3%
Sidewall Height inches (mm) 9.49 (240.95) 9.54 (242.25) 0.05 (1.3) 0.5%
Revolutions per mile (km) 576.69 (358.34) 575 (357.29) -1.68 (-1.05) -0.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.06 mph (32.28 km/h)
25 mph (40.23 km/h)25.07 mph (40.35 km/h)
30 mph (48.28 km/h)30.09 mph (48.42 km/h)
35 mph (56.33 km/h)35.1 mph (56.49 km/h)
40 mph (64.37 km/h)40.12 mph (64.56 km/h)
45 mph (72.42 km/h)45.13 mph (72.63 km/h)
50 mph (80.47 km/h)50.15 mph (80.7 km/h)
55 mph (88.51 km/h)55.16 mph (88.77 km/h)
60 mph (96.56 km/h)60.18 mph (96.84 km/h)
65 mph (104.61 km/h)65.19 mph (104.91 km/h)
70 mph (112.65 km/h)70.2 mph (112.98 km/h)
75 mph (120.7 km/h)75.22 mph (121.05 km/h)
80 mph (128.75 km/h)80.23 mph (129.12 km/h)
85 mph (136.79 km/h)85.25 mph (137.19 km/h)
90 mph (144.84 km/h)90.26 mph (145.27 km/h)
95 mph (152.89 km/h)95.28 mph (153.34 km/h)
100 mph (160.93 km/h)100.29 mph (161.41 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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