Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
285/25r22 vs 245/25r22 Tire Comparison Side By Side
  285/25-22 245/25-22 Difference
Diameter inches (mm) 27.61 (701.3) 26.82 (681.3) -0.79 (-20) -2.9%
Width inches (mm) 11.22 (285) 9.65 (245) -1.57 (-40) -14%
Circum. inches (mm) 86.74 (2203.2) 84.27 (2140.37) -2.47 (-62.83) -2.9%
Sidewall Height inches (mm) 2.81 (71.25) 2.41 (61.25) -0.39 (-10) -14%
Revolutions per mile (km) 730.46 (453.88) 751.9 (467.21) 21.44 (13.32) 2.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.43 mph (31.27 km/h)
25 mph (40.23 km/h)24.29 mph (39.09 km/h)
30 mph (48.28 km/h)29.14 mph (46.9 km/h)
35 mph (56.33 km/h)34 mph (54.72 km/h)
40 mph (64.37 km/h)38.86 mph (62.54 km/h)
45 mph (72.42 km/h)43.72 mph (70.36 km/h)
50 mph (80.47 km/h)48.57 mph (78.17 km/h)
55 mph (88.51 km/h)53.43 mph (85.99 km/h)
60 mph (96.56 km/h)58.29 mph (93.81 km/h)
65 mph (104.61 km/h)63.15 mph (101.62 km/h)
70 mph (112.65 km/h)68 mph (109.44 km/h)
75 mph (120.7 km/h)72.86 mph (117.26 km/h)
80 mph (128.75 km/h)77.72 mph (125.08 km/h)
85 mph (136.79 km/h)82.58 mph (132.89 km/h)
90 mph (144.84 km/h)87.43 mph (140.71 km/h)
95 mph (152.89 km/h)92.29 mph (148.53 km/h)
100 mph (160.93 km/h)97.15 mph (156.35 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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