Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/65r16 vs 35/11.5r16 Tire Comparison Side By Side
  285/65-16 35/11.5-16 Difference
Diameter inches (mm) 30.59 (776.9) 35.08 (891.12) 4.5 (114.22) 14.7%
Width inches (mm) 11.22 (285) 11.5 (292) 0.28 (7) 2.5%
Circum. inches (mm) 96.09 (2440.7) 110.22 (2799.54) 14.13 (358.83) 14.7%
Sidewall Height inches (mm) 7.29 (185.25) 9.54 (242.36) 2.25 (57.11) 30.8%
Revolutions per mile (km) 659.38 (409.72) 574.86 (357.2) -84.52 (-52.52) -12.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.94 mph (36.92 km/h)
25 mph (40.23 km/h)28.68 mph (46.15 km/h)
30 mph (48.28 km/h)34.41 mph (55.38 km/h)
35 mph (56.33 km/h)40.15 mph (64.61 km/h)
40 mph (64.37 km/h)45.88 mph (73.84 km/h)
45 mph (72.42 km/h)51.62 mph (83.07 km/h)
50 mph (80.47 km/h)57.35 mph (92.3 km/h)
55 mph (88.51 km/h)63.09 mph (101.53 km/h)
60 mph (96.56 km/h)68.82 mph (110.76 km/h)
65 mph (104.61 km/h)74.56 mph (119.99 km/h)
70 mph (112.65 km/h)80.29 mph (129.22 km/h)
75 mph (120.7 km/h)86.03 mph (138.45 km/h)
80 mph (128.75 km/h)91.76 mph (147.68 km/h)
85 mph (136.79 km/h)97.5 mph (156.91 km/h)
90 mph (144.84 km/h)103.23 mph (166.14 km/h)
95 mph (152.89 km/h)108.97 mph (175.37 km/h)
100 mph (160.93 km/h)114.7 mph (184.6 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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