Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
110/70r17 vs 100/90r17 Tire Comparison Side By Side
  110/70-17 100/90-17 Difference
Diameter inches (mm) 23.06 (585.8) 24.09 (611.8) 1.02 (26) 4.4%
Width inches (mm) 4.33 (110) 3.94 (100) -0.39 (-10) -9.1%
Circum. inches (mm) 72.45 (1840.34) 75.67 (1922.03) 3.22 (81.68) 4.4%
Sidewall Height inches (mm) 3.03 (77) 3.54 (90) 0.51 (13) 16.9%
Revolutions per mile (km) 874.48 (543.38) 837.32 (520.28) -37.16 (-23.09) -4.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.89 mph (33.62 km/h)
25 mph (40.23 km/h)26.11 mph (42.02 km/h)
30 mph (48.28 km/h)31.33 mph (50.42 km/h)
35 mph (56.33 km/h)36.55 mph (58.83 km/h)
40 mph (64.37 km/h)41.78 mph (67.23 km/h)
45 mph (72.42 km/h)47 mph (75.63 km/h)
50 mph (80.47 km/h)52.22 mph (84.04 km/h)
55 mph (88.51 km/h)57.44 mph (92.44 km/h)
60 mph (96.56 km/h)62.66 mph (100.85 km/h)
65 mph (104.61 km/h)67.88 mph (109.25 km/h)
70 mph (112.65 km/h)73.11 mph (117.65 km/h)
75 mph (120.7 km/h)78.33 mph (126.06 km/h)
80 mph (128.75 km/h)83.55 mph (134.46 km/h)
85 mph (136.79 km/h)88.77 mph (142.87 km/h)
90 mph (144.84 km/h)93.99 mph (151.27 km/h)
95 mph (152.89 km/h)99.22 mph (159.67 km/h)
100 mph (160.93 km/h)104.44 mph (168.08 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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