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 110/70r12 Tire Comparison Side By Side
  130/90-10 110/70-12 Difference
Diameter inches (mm) 19.21 (488) 18.06 (458.8) -1.15 (-29.2) -6%
Width inches (mm) 5.12 (130) 4.33 (110) -0.79 (-20) -15.4%
Circum. inches (mm) 60.36 (1533.1) 56.75 (1441.36) -3.61 (-91.73) -6%
Sidewall Height inches (mm) 4.61 (117) 3.03 (77) -1.57 (-40) -34.2%
Revolutions per mile (km) 1049.73 (652.27) 1116.54 (693.79) 66.81 (41.51) 6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.8 mph (30.26 km/h)
25 mph (40.23 km/h)23.5 mph (37.83 km/h)
30 mph (48.28 km/h)28.2 mph (45.39 km/h)
35 mph (56.33 km/h)32.91 mph (52.96 km/h)
40 mph (64.37 km/h)37.61 mph (60.52 km/h)
45 mph (72.42 km/h)42.31 mph (68.09 km/h)
50 mph (80.47 km/h)47.01 mph (75.65 km/h)
55 mph (88.51 km/h)51.71 mph (83.22 km/h)
60 mph (96.56 km/h)56.41 mph (90.78 km/h)
65 mph (104.61 km/h)61.11 mph (98.35 km/h)
70 mph (112.65 km/h)65.81 mph (105.91 km/h)
75 mph (120.7 km/h)70.51 mph (113.48 km/h)
80 mph (128.75 km/h)75.21 mph (121.04 km/h)
85 mph (136.79 km/h)79.91 mph (128.61 km/h)
90 mph (144.84 km/h)84.61 mph (136.17 km/h)
95 mph (152.89 km/h)89.32 mph (143.74 km/h)
100 mph (160.93 km/h)94.02 mph (151.31 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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