Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
90/90r10 vs 130/90r10 Tire Comparison Side By Side
  90/90-10 130/90-10 Difference
Diameter inches (mm) 16.38 (416) 19.21 (488) 2.83 (72) 17.3%
Width inches (mm) 3.54 (90) 5.12 (130) 1.57 (40) 44.4%
Circum. inches (mm) 51.45 (1306.9) 60.36 (1533.1) 8.91 (226.19) 17.3%
Sidewall Height inches (mm) 3.19 (81) 4.61 (117) 1.42 (36) 44.4%
Revolutions per mile (km) 1231.42 (765.17) 1049.73 (652.27) -181.68 (-112.89) -14.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.46 mph (37.76 km/h)
25 mph (40.23 km/h)29.33 mph (47.2 km/h)
30 mph (48.28 km/h)35.19 mph (56.64 km/h)
35 mph (56.33 km/h)41.06 mph (66.08 km/h)
40 mph (64.37 km/h)46.92 mph (75.52 km/h)
45 mph (72.42 km/h)52.79 mph (84.95 km/h)
50 mph (80.47 km/h)58.65 mph (94.39 km/h)
55 mph (88.51 km/h)64.52 mph (103.83 km/h)
60 mph (96.56 km/h)70.38 mph (113.27 km/h)
65 mph (104.61 km/h)76.25 mph (122.71 km/h)
70 mph (112.65 km/h)82.12 mph (132.15 km/h)
75 mph (120.7 km/h)87.98 mph (141.59 km/h)
80 mph (128.75 km/h)93.85 mph (151.03 km/h)
85 mph (136.79 km/h)99.71 mph (160.47 km/h)
90 mph (144.84 km/h)105.58 mph (169.91 km/h)
95 mph (152.89 km/h)111.44 mph (179.35 km/h)
100 mph (160.93 km/h)117.31 mph (188.79 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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