Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/90r10 vs 130/70r10 Tire Comparison Side By Side
  130/90-10 130/70-10 Difference
Diameter inches (mm) 19.21 (488) 17.17 (436) -2.05 (-52) -10.7%
Width inches (mm) 5.12 (130) 5.12 (130) 0 (0) 0%
Circum. inches (mm) 60.36 (1533.1) 53.93 (1369.73) -6.43 (-163.36) -10.7%
Sidewall Height inches (mm) 4.61 (117) 3.58 (91) -1.02 (-26) -22.2%
Revolutions per mile (km) 1049.73 (652.27) 1174.93 (730.07) 125.2 (77.79) 11.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.87 mph (28.76 km/h)
25 mph (40.23 km/h)22.34 mph (35.95 km/h)
30 mph (48.28 km/h)26.8 mph (43.14 km/h)
35 mph (56.33 km/h)31.27 mph (50.33 km/h)
40 mph (64.37 km/h)35.74 mph (57.51 km/h)
45 mph (72.42 km/h)40.2 mph (64.7 km/h)
50 mph (80.47 km/h)44.67 mph (71.89 km/h)
55 mph (88.51 km/h)49.14 mph (79.08 km/h)
60 mph (96.56 km/h)53.61 mph (86.27 km/h)
65 mph (104.61 km/h)58.07 mph (93.46 km/h)
70 mph (112.65 km/h)62.54 mph (100.65 km/h)
75 mph (120.7 km/h)67.01 mph (107.84 km/h)
80 mph (128.75 km/h)71.48 mph (115.03 km/h)
85 mph (136.79 km/h)75.94 mph (122.22 km/h)
90 mph (144.84 km/h)80.41 mph (129.41 km/h)
95 mph (152.89 km/h)84.88 mph (136.6 km/h)
100 mph (160.93 km/h)89.34 mph (143.79 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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