Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
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130/90r10 vs 90/90r10 Tire Comparison Side By Side
  130/90-10 90/90-10 Difference
Diameter inches (mm) 19.21 (488) 16.38 (416) -2.83 (-72) -14.8%
Width inches (mm) 5.12 (130) 3.54 (90) -1.57 (-40) -30.8%
Circum. inches (mm) 60.36 (1533.1) 51.45 (1306.9) -8.91 (-226.19) -14.8%
Sidewall Height inches (mm) 4.61 (117) 3.19 (81) -1.42 (-36) -30.8%
Revolutions per mile (km) 1049.73 (652.27) 1231.42 (765.17) 181.68 (112.89) 17.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.05 mph (27.44 km/h)
25 mph (40.23 km/h)21.31 mph (34.3 km/h)
30 mph (48.28 km/h)25.57 mph (41.16 km/h)
35 mph (56.33 km/h)29.84 mph (48.02 km/h)
40 mph (64.37 km/h)34.1 mph (54.88 km/h)
45 mph (72.42 km/h)38.36 mph (61.74 km/h)
50 mph (80.47 km/h)42.62 mph (68.6 km/h)
55 mph (88.51 km/h)46.89 mph (75.45 km/h)
60 mph (96.56 km/h)51.15 mph (82.31 km/h)
65 mph (104.61 km/h)55.41 mph (89.17 km/h)
70 mph (112.65 km/h)59.67 mph (96.03 km/h)
75 mph (120.7 km/h)63.93 mph (102.89 km/h)
80 mph (128.75 km/h)68.2 mph (109.75 km/h)
85 mph (136.79 km/h)72.46 mph (116.61 km/h)
90 mph (144.84 km/h)76.72 mph (123.47 km/h)
95 mph (152.89 km/h)80.98 mph (130.33 km/h)
100 mph (160.93 km/h)85.25 mph (137.19 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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