Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r17 vs 335/70r17 Tire Comparison Side By Side
  135/70-17 335/70-17 Difference
Diameter inches (mm) 24.44 (620.8) 35.46 (900.8) 11.02 (280) 45.1%
Width inches (mm) 5.31 (135) 13.19 (335) 7.87 (200) 148.1%
Circum. inches (mm) 76.78 (1950.3) 111.42 (2829.95) 34.63 (879.65) 45.1%
Sidewall Height inches (mm) 3.72 (94.5) 9.23 (234.5) 5.51 (140) 148.1%
Revolutions per mile (km) 825.18 (512.74) 568.68 (353.36) -256.49 (-159.38) -31.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)29.02 mph (46.7 km/h)
25 mph (40.23 km/h)36.28 mph (58.38 km/h)
30 mph (48.28 km/h)43.53 mph (70.06 km/h)
35 mph (56.33 km/h)50.79 mph (81.73 km/h)
40 mph (64.37 km/h)58.04 mph (93.41 km/h)
45 mph (72.42 km/h)65.3 mph (105.08 km/h)
50 mph (80.47 km/h)72.55 mph (116.76 km/h)
55 mph (88.51 km/h)79.81 mph (128.44 km/h)
60 mph (96.56 km/h)87.06 mph (140.11 km/h)
65 mph (104.61 km/h)94.32 mph (151.79 km/h)
70 mph (112.65 km/h)101.57 mph (163.46 km/h)
75 mph (120.7 km/h)108.83 mph (175.14 km/h)
80 mph (128.75 km/h)116.08 mph (186.82 km/h)
85 mph (136.79 km/h)123.34 mph (198.49 km/h)
90 mph (144.84 km/h)130.59 mph (210.17 km/h)
95 mph (152.89 km/h)137.85 mph (221.85 km/h)
100 mph (160.93 km/h)145.1 mph (233.52 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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