Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/60r16 vs 265/70r16 Tire Comparison Side By Side
  225/60-16 265/70-16 Difference
Diameter inches (mm) 26.63 (676.4) 30.61 (777.4) 3.98 (101) 14.9%
Width inches (mm) 8.86 (225) 10.43 (265) 1.57 (40) 17.8%
Circum. inches (mm) 83.66 (2124.97) 96.15 (2442.27) 12.49 (317.3) 14.9%
Sidewall Height inches (mm) 5.31 (135) 7.3 (185.5) 1.99 (50.5) 37.4%
Revolutions per mile (km) 757.35 (470.59) 658.95 (409.45) -98.39 (-61.14) -13%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.99 mph (36.99 km/h)
25 mph (40.23 km/h)28.73 mph (46.24 km/h)
30 mph (48.28 km/h)34.48 mph (55.49 km/h)
35 mph (56.33 km/h)40.23 mph (64.74 km/h)
40 mph (64.37 km/h)45.97 mph (73.99 km/h)
45 mph (72.42 km/h)51.72 mph (83.23 km/h)
50 mph (80.47 km/h)57.47 mph (92.48 km/h)
55 mph (88.51 km/h)63.21 mph (101.73 km/h)
60 mph (96.56 km/h)68.96 mph (110.98 km/h)
65 mph (104.61 km/h)74.71 mph (120.23 km/h)
70 mph (112.65 km/h)80.45 mph (129.48 km/h)
75 mph (120.7 km/h)86.2 mph (138.72 km/h)
80 mph (128.75 km/h)91.95 mph (147.97 km/h)
85 mph (136.79 km/h)97.69 mph (157.22 km/h)
90 mph (144.84 km/h)103.44 mph (166.47 km/h)
95 mph (152.89 km/h)109.19 mph (175.72 km/h)
100 mph (160.93 km/h)114.93 mph (184.97 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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