Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/60r16 vs 215/55r16 Tire Comparison Side By Side
  215/60-16 215/55-16 Difference
Diameter inches (mm) 26.16 (664.4) 25.31 (642.9) -0.85 (-21.5) -3.2%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 82.18 (2087.27) 79.52 (2019.73) -2.66 (-67.54) -3.2%
Sidewall Height inches (mm) 5.08 (129) 4.66 (118.25) -0.42 (-10.75) -8.3%
Revolutions per mile (km) 771.03 (479.09) 796.81 (495.11) 25.78 (16.02) 3.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.35 mph (31.15 km/h)
25 mph (40.23 km/h)24.19 mph (38.93 km/h)
30 mph (48.28 km/h)29.03 mph (46.72 km/h)
35 mph (56.33 km/h)33.87 mph (54.5 km/h)
40 mph (64.37 km/h)38.71 mph (62.29 km/h)
45 mph (72.42 km/h)43.54 mph (70.08 km/h)
50 mph (80.47 km/h)48.38 mph (77.86 km/h)
55 mph (88.51 km/h)53.22 mph (85.65 km/h)
60 mph (96.56 km/h)58.06 mph (93.44 km/h)
65 mph (104.61 km/h)62.9 mph (101.22 km/h)
70 mph (112.65 km/h)67.73 mph (109.01 km/h)
75 mph (120.7 km/h)72.57 mph (116.8 km/h)
80 mph (128.75 km/h)77.41 mph (124.58 km/h)
85 mph (136.79 km/h)82.25 mph (132.37 km/h)
90 mph (144.84 km/h)87.09 mph (140.15 km/h)
95 mph (152.89 km/h)91.93 mph (147.94 km/h)
100 mph (160.93 km/h)96.76 mph (155.73 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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