Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/80r17 vs 110/80r17 Tire Comparison Side By Side
  100/80-17 110/80-17 Difference
Diameter inches (mm) 23.3 (591.8) 23.93 (607.8) 0.63 (16) 2.7%
Width inches (mm) 3.94 (100) 4.33 (110) 0.39 (10) 10%
Circum. inches (mm) 73.2 (1859.19) 75.18 (1909.46) 1.98 (50.27) 2.7%
Sidewall Height inches (mm) 3.15 (80) 3.46 (88) 0.31 (8) 10%
Revolutions per mile (km) 865.61 (537.87) 842.83 (523.71) -22.79 (-14.16) -2.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.54 mph (33.06 km/h)
25 mph (40.23 km/h)25.68 mph (41.32 km/h)
30 mph (48.28 km/h)30.81 mph (49.59 km/h)
35 mph (56.33 km/h)35.95 mph (57.85 km/h)
40 mph (64.37 km/h)41.08 mph (66.11 km/h)
45 mph (72.42 km/h)46.22 mph (74.38 km/h)
50 mph (80.47 km/h)51.35 mph (82.64 km/h)
55 mph (88.51 km/h)56.49 mph (90.91 km/h)
60 mph (96.56 km/h)61.62 mph (99.17 km/h)
65 mph (104.61 km/h)66.76 mph (107.44 km/h)
70 mph (112.65 km/h)71.89 mph (115.7 km/h)
75 mph (120.7 km/h)77.03 mph (123.96 km/h)
80 mph (128.75 km/h)82.16 mph (132.23 km/h)
85 mph (136.79 km/h)87.3 mph (140.49 km/h)
90 mph (144.84 km/h)92.43 mph (148.76 km/h)
95 mph (152.89 km/h)97.57 mph (157.02 km/h)
100 mph (160.93 km/h)102.7 mph (165.29 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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