Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/60r17 vs 120/60r17 Tire Comparison Side By Side
  130/60-17 120/60-17 Difference
Diameter inches (mm) 23.14 (587.8) 22.67 (575.8) -0.47 (-12) -2%
Width inches (mm) 5.12 (130) 4.72 (120) -0.39 (-10) -7.7%
Circum. inches (mm) 72.7 (1846.63) 71.22 (1808.93) -1.48 (-37.7) -2%
Sidewall Height inches (mm) 3.07 (78) 2.83 (72) -0.24 (-6) -7.7%
Revolutions per mile (km) 871.5 (541.53) 889.67 (552.81) 18.16 (11.29) 2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.59 mph (31.53 km/h)
25 mph (40.23 km/h)24.49 mph (39.41 km/h)
30 mph (48.28 km/h)29.39 mph (47.29 km/h)
35 mph (56.33 km/h)34.29 mph (55.18 km/h)
40 mph (64.37 km/h)39.18 mph (63.06 km/h)
45 mph (72.42 km/h)44.08 mph (70.94 km/h)
50 mph (80.47 km/h)48.98 mph (78.82 km/h)
55 mph (88.51 km/h)53.88 mph (86.71 km/h)
60 mph (96.56 km/h)58.78 mph (94.59 km/h)
65 mph (104.61 km/h)63.67 mph (102.47 km/h)
70 mph (112.65 km/h)68.57 mph (110.35 km/h)
75 mph (120.7 km/h)73.47 mph (118.24 km/h)
80 mph (128.75 km/h)78.37 mph (126.12 km/h)
85 mph (136.79 km/h)83.26 mph (134 km/h)
90 mph (144.84 km/h)88.16 mph (141.88 km/h)
95 mph (152.89 km/h)93.06 mph (149.77 km/h)
100 mph (160.93 km/h)97.96 mph (157.65 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
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