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 215/65r16 Tire Comparison Side By Side
  220/60-16 215/65-16 Difference
Diameter inches (mm) 26.39 (670.4) 27 (685.9) 0.61 (15.5) 2.3%
Width inches (mm) 8.66 (220) 8.46 (215) -0.2 (-5) -2.3%
Circum. inches (mm) 82.92 (2106.12) 84.84 (2154.82) 1.92 (48.69) 2.3%
Sidewall Height inches (mm) 5.2 (132) 5.5 (139.75) 0.31 (7.75) 5.9%
Revolutions per mile (km) 764.13 (474.81) 746.86 (464.08) -17.27 (-10.73) -2.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.46 mph (32.93 km/h)
25 mph (40.23 km/h)25.58 mph (41.16 km/h)
30 mph (48.28 km/h)30.69 mph (49.4 km/h)
35 mph (56.33 km/h)35.81 mph (57.63 km/h)
40 mph (64.37 km/h)40.92 mph (65.86 km/h)
45 mph (72.42 km/h)46.04 mph (74.1 km/h)
50 mph (80.47 km/h)51.16 mph (82.33 km/h)
55 mph (88.51 km/h)56.27 mph (90.56 km/h)
60 mph (96.56 km/h)61.39 mph (98.79 km/h)
65 mph (104.61 km/h)66.5 mph (107.03 km/h)
70 mph (112.65 km/h)71.62 mph (115.26 km/h)
75 mph (120.7 km/h)76.73 mph (123.49 km/h)
80 mph (128.75 km/h)81.85 mph (131.72 km/h)
85 mph (136.79 km/h)86.97 mph (139.96 km/h)
90 mph (144.84 km/h)92.08 mph (148.19 km/h)
95 mph (152.89 km/h)97.2 mph (156.42 km/h)
100 mph (160.93 km/h)102.31 mph (164.66 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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