Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/70r17 vs 110/70r17 Tire Comparison Side By Side
  100/70-17 110/70-17 Difference
Diameter inches (mm) 22.51 (571.8) 23.06 (585.8) 0.55 (14) 2.4%
Width inches (mm) 3.94 (100) 4.33 (110) 0.39 (10) 10%
Circum. inches (mm) 70.72 (1796.36) 72.45 (1840.34) 1.73 (43.98) 2.4%
Sidewall Height inches (mm) 2.76 (70) 3.03 (77) 0.28 (7) 10%
Revolutions per mile (km) 895.89 (556.68) 874.48 (543.38) -21.41 (-13.3) -2.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.49 mph (32.98 km/h)
25 mph (40.23 km/h)25.61 mph (41.22 km/h)
30 mph (48.28 km/h)30.73 mph (49.46 km/h)
35 mph (56.33 km/h)35.86 mph (57.71 km/h)
40 mph (64.37 km/h)40.98 mph (65.95 km/h)
45 mph (72.42 km/h)46.1 mph (74.19 km/h)
50 mph (80.47 km/h)51.22 mph (82.44 km/h)
55 mph (88.51 km/h)56.35 mph (90.68 km/h)
60 mph (96.56 km/h)61.47 mph (98.93 km/h)
65 mph (104.61 km/h)66.59 mph (107.17 km/h)
70 mph (112.65 km/h)71.71 mph (115.41 km/h)
75 mph (120.7 km/h)76.84 mph (123.66 km/h)
80 mph (128.75 km/h)81.96 mph (131.9 km/h)
85 mph (136.79 km/h)87.08 mph (140.14 km/h)
90 mph (144.84 km/h)92.2 mph (148.39 km/h)
95 mph (152.89 km/h)97.33 mph (156.63 km/h)
100 mph (160.93 km/h)102.45 mph (164.88 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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