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 225/60r16 Tire Comparison Side By Side
  205/55-16 225/60-16 Difference
Diameter inches (mm) 24.88 (631.9) 26.63 (676.4) 1.75 (44.5) 7%
Width inches (mm) 8.07 (205) 8.86 (225) 0.79 (20) 9.8%
Circum. inches (mm) 78.16 (1985.17) 83.66 (2124.97) 5.5 (139.8) 7%
Sidewall Height inches (mm) 4.44 (112.75) 5.31 (135) 0.88 (22.25) 19.7%
Revolutions per mile (km) 810.68 (503.73) 757.35 (470.59) -53.33 (-33.14) -6.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.41 mph (34.45 km/h)
25 mph (40.23 km/h)26.76 mph (43.07 km/h)
30 mph (48.28 km/h)32.11 mph (51.68 km/h)
35 mph (56.33 km/h)37.46 mph (60.29 km/h)
40 mph (64.37 km/h)42.82 mph (68.91 km/h)
45 mph (72.42 km/h)48.17 mph (77.52 km/h)
50 mph (80.47 km/h)53.52 mph (86.13 km/h)
55 mph (88.51 km/h)58.87 mph (94.75 km/h)
60 mph (96.56 km/h)64.23 mph (103.36 km/h)
65 mph (104.61 km/h)69.58 mph (111.97 km/h)
70 mph (112.65 km/h)74.93 mph (120.59 km/h)
75 mph (120.7 km/h)80.28 mph (129.2 km/h)
80 mph (128.75 km/h)85.63 mph (137.81 km/h)
85 mph (136.79 km/h)90.99 mph (146.43 km/h)
90 mph (144.84 km/h)96.34 mph (155.04 km/h)
95 mph (152.89 km/h)101.69 mph (163.65 km/h)
100 mph (160.93 km/h)107.04 mph (172.27 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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