Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
140/60r14 vs 110/60r14 Tire Comparison Side By Side
  140/60-14 110/60-14 Difference
Diameter inches (mm) 20.61 (523.6) 19.2 (487.6) -1.42 (-36) -6.9%
Width inches (mm) 5.51 (140) 4.33 (110) -1.18 (-30) -21.4%
Circum. inches (mm) 64.76 (1644.94) 60.31 (1531.84) -4.45 (-113.1) -6.9%
Sidewall Height inches (mm) 3.31 (84) 2.6 (66) -0.71 (-18) -21.4%
Revolutions per mile (km) 978.36 (607.92) 1050.59 (652.81) 72.23 (44.88) 7.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.62 mph (29.97 km/h)
25 mph (40.23 km/h)23.28 mph (37.47 km/h)
30 mph (48.28 km/h)27.94 mph (44.96 km/h)
35 mph (56.33 km/h)32.59 mph (52.45 km/h)
40 mph (64.37 km/h)37.25 mph (59.95 km/h)
45 mph (72.42 km/h)41.91 mph (67.44 km/h)
50 mph (80.47 km/h)46.56 mph (74.93 km/h)
55 mph (88.51 km/h)51.22 mph (82.43 km/h)
60 mph (96.56 km/h)55.87 mph (89.92 km/h)
65 mph (104.61 km/h)60.53 mph (97.42 km/h)
70 mph (112.65 km/h)65.19 mph (104.91 km/h)
75 mph (120.7 km/h)69.84 mph (112.4 km/h)
80 mph (128.75 km/h)74.5 mph (119.9 km/h)
85 mph (136.79 km/h)79.16 mph (127.39 km/h)
90 mph (144.84 km/h)83.81 mph (134.88 km/h)
95 mph (152.89 km/h)88.47 mph (142.38 km/h)
100 mph (160.93 km/h)93.12 mph (149.87 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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