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 205/50r16 Tire Comparison Side By Side
  220/60-16 205/50-16 Difference
Diameter inches (mm) 26.39 (670.4) 24.07 (611.4) -2.32 (-59) -8.8%
Width inches (mm) 8.66 (220) 8.07 (205) -0.59 (-15) -6.8%
Circum. inches (mm) 82.92 (2106.12) 75.62 (1920.77) -7.3 (-185.35) -8.8%
Sidewall Height inches (mm) 5.2 (132) 4.04 (102.5) -1.16 (-29.5) -22.3%
Revolutions per mile (km) 764.13 (474.81) 837.86 (520.62) 73.74 (45.82) 9.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.24 mph (29.35 km/h)
25 mph (40.23 km/h)22.8 mph (36.69 km/h)
30 mph (48.28 km/h)27.36 mph (44.03 km/h)
35 mph (56.33 km/h)31.92 mph (51.37 km/h)
40 mph (64.37 km/h)36.48 mph (58.71 km/h)
45 mph (72.42 km/h)41.04 mph (66.05 km/h)
50 mph (80.47 km/h)45.6 mph (73.39 km/h)
55 mph (88.51 km/h)50.16 mph (80.72 km/h)
60 mph (96.56 km/h)54.72 mph (88.06 km/h)
65 mph (104.61 km/h)59.28 mph (95.4 km/h)
70 mph (112.65 km/h)63.84 mph (102.74 km/h)
75 mph (120.7 km/h)68.4 mph (110.08 km/h)
80 mph (128.75 km/h)72.96 mph (117.42 km/h)
85 mph (136.79 km/h)77.52 mph (124.76 km/h)
90 mph (144.84 km/h)82.08 mph (132.09 km/h)
95 mph (152.89 km/h)86.64 mph (139.43 km/h)
100 mph (160.93 km/h)91.2 mph (146.77 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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