Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r16 vs 225/35r19 Tire Comparison Side By Side
  205/55-16 225/35-19 Difference
Diameter inches (mm) 24.88 (631.9) 25.2 (640.1) 0.32 (8.2) 1.3%
Width inches (mm) 8.07 (205) 8.86 (225) 0.79 (20) 9.8%
Circum. inches (mm) 78.16 (1985.17) 79.17 (2010.93) 1.01 (25.76) 1.3%
Sidewall Height inches (mm) 4.44 (112.75) 3.1 (78.75) -1.34 (-34) -30.2%
Revolutions per mile (km) 810.68 (503.73) 800.3 (497.28) -10.39 (-6.45) -1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.26 mph (32.6 km/h)
25 mph (40.23 km/h)25.32 mph (40.76 km/h)
30 mph (48.28 km/h)30.39 mph (48.91 km/h)
35 mph (56.33 km/h)35.45 mph (57.06 km/h)
40 mph (64.37 km/h)40.52 mph (65.21 km/h)
45 mph (72.42 km/h)45.58 mph (73.36 km/h)
50 mph (80.47 km/h)50.65 mph (81.51 km/h)
55 mph (88.51 km/h)55.71 mph (89.66 km/h)
60 mph (96.56 km/h)60.78 mph (97.81 km/h)
65 mph (104.61 km/h)65.84 mph (105.97 km/h)
70 mph (112.65 km/h)70.91 mph (114.12 km/h)
75 mph (120.7 km/h)75.97 mph (122.27 km/h)
80 mph (128.75 km/h)81.04 mph (130.42 km/h)
85 mph (136.79 km/h)86.1 mph (138.57 km/h)
90 mph (144.84 km/h)91.17 mph (146.72 km/h)
95 mph (152.89 km/h)96.23 mph (154.87 km/h)
100 mph (160.93 km/h)101.3 mph (163.02 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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