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 225/60r16 Tire Comparison Side By Side
  215/65-16 225/60-16 Difference
Diameter inches (mm) 27 (685.9) 26.63 (676.4) -0.37 (-9.5) -1.4%
Width inches (mm) 8.46 (215) 8.86 (225) 0.39 (10) 4.7%
Circum. inches (mm) 84.84 (2154.82) 83.66 (2124.97) -1.18 (-29.85) -1.4%
Sidewall Height inches (mm) 5.5 (139.75) 5.31 (135) -0.19 (-4.75) -3.4%
Revolutions per mile (km) 746.86 (464.08) 757.35 (470.59) 10.49 (6.52) 1.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.72 mph (31.74 km/h)
25 mph (40.23 km/h)24.65 mph (39.68 km/h)
30 mph (48.28 km/h)29.58 mph (47.61 km/h)
35 mph (56.33 km/h)34.52 mph (55.55 km/h)
40 mph (64.37 km/h)39.45 mph (63.48 km/h)
45 mph (72.42 km/h)44.38 mph (71.42 km/h)
50 mph (80.47 km/h)49.31 mph (79.35 km/h)
55 mph (88.51 km/h)54.24 mph (87.29 km/h)
60 mph (96.56 km/h)59.17 mph (95.22 km/h)
65 mph (104.61 km/h)64.1 mph (103.16 km/h)
70 mph (112.65 km/h)69.03 mph (111.09 km/h)
75 mph (120.7 km/h)73.96 mph (119.03 km/h)
80 mph (128.75 km/h)78.89 mph (126.96 km/h)
85 mph (136.79 km/h)83.82 mph (134.9 km/h)
90 mph (144.84 km/h)88.75 mph (142.84 km/h)
95 mph (152.89 km/h)93.68 mph (150.77 km/h)
100 mph (160.93 km/h)98.61 mph (158.71 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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