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 315/75r16 Tire Comparison Side By Side
  35/12-16 315/75-16 Difference
Diameter inches (mm) 34.97 (888.3) 34.6 (878.9) -0.37 (-9.4) -1.1%
Width inches (mm) 12.01 (305) 12.4 (315) 0.39 (10) 3.3%
Circum. inches (mm) 109.87 (2790.68) 108.71 (2761.15) -1.16 (-29.53) -1.1%
Sidewall Height inches (mm) 9.49 (240.95) 9.3 (236.25) -0.19 (-4.7) -2%
Revolutions per mile (km) 576.69 (358.34) 582.85 (362.17) 6.17 (3.83) 1.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.79 mph (31.85 km/h)
25 mph (40.23 km/h)24.74 mph (39.81 km/h)
30 mph (48.28 km/h)29.68 mph (47.77 km/h)
35 mph (56.33 km/h)34.63 mph (55.73 km/h)
40 mph (64.37 km/h)39.58 mph (63.69 km/h)
45 mph (72.42 km/h)44.52 mph (71.65 km/h)
50 mph (80.47 km/h)49.47 mph (79.62 km/h)
55 mph (88.51 km/h)54.42 mph (87.58 km/h)
60 mph (96.56 km/h)59.37 mph (95.54 km/h)
65 mph (104.61 km/h)64.31 mph (103.5 km/h)
70 mph (112.65 km/h)69.26 mph (111.46 km/h)
75 mph (120.7 km/h)74.21 mph (119.42 km/h)
80 mph (128.75 km/h)79.15 mph (127.39 km/h)
85 mph (136.79 km/h)84.1 mph (135.35 km/h)
90 mph (144.84 km/h)89.05 mph (143.31 km/h)
95 mph (152.89 km/h)93.99 mph (151.27 km/h)
100 mph (160.93 km/h)98.94 mph (159.23 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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