Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/65r16 vs 215/60r16 Tire Comparison Side By Side
  215/65-16 215/60-16 Difference
Diameter inches (mm) 27 (685.9) 26.16 (664.4) -0.85 (-21.5) -3.1%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 84.84 (2154.82) 82.18 (2087.27) -2.66 (-67.54) -3.1%
Sidewall Height inches (mm) 5.5 (139.75) 5.08 (129) -0.42 (-10.75) -7.7%
Revolutions per mile (km) 746.86 (464.08) 771.03 (479.09) 24.17 (15.02) 3.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.37 mph (31.18 km/h)
25 mph (40.23 km/h)24.22 mph (38.97 km/h)
30 mph (48.28 km/h)29.06 mph (46.77 km/h)
35 mph (56.33 km/h)33.9 mph (54.56 km/h)
40 mph (64.37 km/h)38.75 mph (62.36 km/h)
45 mph (72.42 km/h)43.59 mph (70.15 km/h)
50 mph (80.47 km/h)48.43 mph (77.95 km/h)
55 mph (88.51 km/h)53.28 mph (85.74 km/h)
60 mph (96.56 km/h)58.12 mph (93.53 km/h)
65 mph (104.61 km/h)62.96 mph (101.33 km/h)
70 mph (112.65 km/h)67.81 mph (109.12 km/h)
75 mph (120.7 km/h)72.65 mph (116.92 km/h)
80 mph (128.75 km/h)77.49 mph (124.71 km/h)
85 mph (136.79 km/h)82.34 mph (132.51 km/h)
90 mph (144.84 km/h)87.18 mph (140.3 km/h)
95 mph (152.89 km/h)92.02 mph (148.1 km/h)
100 mph (160.93 km/h)96.87 mph (155.89 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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