Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/70r16 vs 225/60r16 Tire Comparison Side By Side
  265/70-16 225/60-16 Difference
Diameter inches (mm) 30.61 (777.4) 26.63 (676.4) -3.98 (-101) -13%
Width inches (mm) 10.43 (265) 8.86 (225) -1.57 (-40) -15.1%
Circum. inches (mm) 96.15 (2442.27) 83.66 (2124.97) -12.49 (-317.3) -13%
Sidewall Height inches (mm) 7.3 (185.5) 5.31 (135) -1.99 (-50.5) -27.2%
Revolutions per mile (km) 658.95 (409.45) 757.35 (470.59) 98.39 (61.14) 14.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.4 mph (28.01 km/h)
25 mph (40.23 km/h)21.75 mph (35.01 km/h)
30 mph (48.28 km/h)26.1 mph (42.01 km/h)
35 mph (56.33 km/h)30.45 mph (49.01 km/h)
40 mph (64.37 km/h)34.8 mph (56.01 km/h)
45 mph (72.42 km/h)39.15 mph (63.01 km/h)
50 mph (80.47 km/h)43.5 mph (70.01 km/h)
55 mph (88.51 km/h)47.85 mph (77.01 km/h)
60 mph (96.56 km/h)52.2 mph (84.02 km/h)
65 mph (104.61 km/h)56.56 mph (91.02 km/h)
70 mph (112.65 km/h)60.91 mph (98.02 km/h)
75 mph (120.7 km/h)65.26 mph (105.02 km/h)
80 mph (128.75 km/h)69.61 mph (112.02 km/h)
85 mph (136.79 km/h)73.96 mph (119.02 km/h)
90 mph (144.84 km/h)78.31 mph (126.02 km/h)
95 mph (152.89 km/h)82.66 mph (133.02 km/h)
100 mph (160.93 km/h)87.01 mph (140.03 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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