Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
100/90r19 vs 110/90r19 Tire Comparison Side By Side
  100/90-19 110/90-19 Difference
Diameter inches (mm) 26.09 (662.6) 26.8 (680.6) 0.71 (18) 2.7%
Width inches (mm) 3.94 (100) 4.33 (110) 0.39 (10) 10%
Circum. inches (mm) 81.95 (2081.62) 84.18 (2138.17) 2.23 (56.55) 2.7%
Sidewall Height inches (mm) 3.54 (90) 3.9 (99) 0.35 (9) 10%
Revolutions per mile (km) 773.12 (480.39) 752.67 (467.69) -20.45 (-12.71) -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 (41.33 km/h)
30 mph (48.28 km/h)30.81 mph (49.59 km/h)
35 mph (56.33 km/h)35.95 mph (57.86 km/h)
40 mph (64.37 km/h)41.09 mph (66.12 km/h)
45 mph (72.42 km/h)46.22 mph (74.39 km/h)
50 mph (80.47 km/h)51.36 mph (82.65 km/h)
55 mph (88.51 km/h)56.49 mph (90.92 km/h)
60 mph (96.56 km/h)61.63 mph (99.18 km/h)
65 mph (104.61 km/h)66.77 mph (107.45 km/h)
70 mph (112.65 km/h)71.9 mph (115.71 km/h)
75 mph (120.7 km/h)77.04 mph (123.98 km/h)
80 mph (128.75 km/h)82.17 mph (132.25 km/h)
85 mph (136.79 km/h)87.31 mph (140.51 km/h)
90 mph (144.84 km/h)92.44 mph (148.78 km/h)
95 mph (152.89 km/h)97.58 mph (157.04 km/h)
100 mph (160.93 km/h)102.72 mph (165.31 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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