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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130/60r13 vs 110/90r13 Tire Comparison Side By Side
  130/60-13 110/90-13 Difference
Diameter inches (mm) 19.14 (486.2) 20.8 (528.2) 1.65 (42) 8.6%
Width inches (mm) 5.12 (130) 4.33 (110) -0.79 (-20) -15.4%
Circum. inches (mm) 60.14 (1527.44) 65.33 (1659.39) 5.19 (131.95) 8.6%
Sidewall Height inches (mm) 3.07 (78) 3.9 (99) 0.83 (21) 26.9%
Revolutions per mile (km) 1053.62 (654.69) 969.84 (602.63) -83.78 (-52.06) -8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.73 mph (34.97 km/h)
25 mph (40.23 km/h)27.16 mph (43.71 km/h)
30 mph (48.28 km/h)32.59 mph (52.45 km/h)
35 mph (56.33 km/h)38.02 mph (61.19 km/h)
40 mph (64.37 km/h)43.46 mph (69.93 km/h)
45 mph (72.42 km/h)48.89 mph (78.68 km/h)
50 mph (80.47 km/h)54.32 mph (87.42 km/h)
55 mph (88.51 km/h)59.75 mph (96.16 km/h)
60 mph (96.56 km/h)65.18 mph (104.9 km/h)
65 mph (104.61 km/h)70.61 mph (113.64 km/h)
70 mph (112.65 km/h)76.05 mph (122.39 km/h)
75 mph (120.7 km/h)81.48 mph (131.13 km/h)
80 mph (128.75 km/h)86.91 mph (139.87 km/h)
85 mph (136.79 km/h)92.34 mph (148.61 km/h)
90 mph (144.84 km/h)97.77 mph (157.35 km/h)
95 mph (152.89 km/h)103.21 mph (166.1 km/h)
100 mph (160.93 km/h)108.64 mph (174.84 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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