Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
220/60r16 vs 205/55r16 Tire Comparison Side By Side
  220/60-16 205/55-16 Difference
Diameter inches (mm) 26.39 (670.4) 24.88 (631.9) -1.52 (-38.5) -5.7%
Width inches (mm) 8.66 (220) 8.07 (205) -0.59 (-15) -6.8%
Circum. inches (mm) 82.92 (2106.12) 78.16 (1985.17) -4.76 (-120.95) -5.7%
Sidewall Height inches (mm) 5.2 (132) 4.44 (112.75) -0.76 (-19.25) -14.6%
Revolutions per mile (km) 764.13 (474.81) 810.68 (503.73) 46.56 (28.93) 6.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.85 mph (30.34 km/h)
25 mph (40.23 km/h)23.56 mph (37.92 km/h)
30 mph (48.28 km/h)28.28 mph (45.51 km/h)
35 mph (56.33 km/h)32.99 mph (53.09 km/h)
40 mph (64.37 km/h)37.7 mph (60.68 km/h)
45 mph (72.42 km/h)42.42 mph (68.26 km/h)
50 mph (80.47 km/h)47.13 mph (75.85 km/h)
55 mph (88.51 km/h)51.84 mph (83.43 km/h)
60 mph (96.56 km/h)56.55 mph (91.02 km/h)
65 mph (104.61 km/h)61.27 mph (98.6 km/h)
70 mph (112.65 km/h)65.98 mph (106.18 km/h)
75 mph (120.7 km/h)70.69 mph (113.77 km/h)
80 mph (128.75 km/h)75.41 mph (121.35 km/h)
85 mph (136.79 km/h)80.12 mph (128.94 km/h)
90 mph (144.84 km/h)84.83 mph (136.52 km/h)
95 mph (152.89 km/h)89.54 mph (144.11 km/h)
100 mph (160.93 km/h)94.26 mph (151.69 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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