Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/35r16 vs 225/35r16 Tire Comparison Side By Side
  215/35-16 225/35-16 Difference
Diameter inches (mm) 21.93 (556.9) 22.2 (563.9) 0.28 (7) 1.3%
Width inches (mm) 8.46 (215) 8.86 (225) 0.39 (10) 4.7%
Circum. inches (mm) 68.88 (1749.55) 69.75 (1771.54) 0.87 (21.99) 1.3%
Sidewall Height inches (mm) 2.96 (75.25) 3.1 (78.75) 0.14 (3.5) 4.7%
Revolutions per mile (km) 919.86 (571.57) 908.44 (564.48) -11.42 (-7.1) -1.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.25 mph (32.59 km/h)
25 mph (40.23 km/h)25.31 mph (40.74 km/h)
30 mph (48.28 km/h)30.38 mph (48.89 km/h)
35 mph (56.33 km/h)35.44 mph (57.04 km/h)
40 mph (64.37 km/h)40.5 mph (65.18 km/h)
45 mph (72.42 km/h)45.57 mph (73.33 km/h)
50 mph (80.47 km/h)50.63 mph (81.48 km/h)
55 mph (88.51 km/h)55.69 mph (89.63 km/h)
60 mph (96.56 km/h)60.75 mph (97.77 km/h)
65 mph (104.61 km/h)65.82 mph (105.92 km/h)
70 mph (112.65 km/h)70.88 mph (114.07 km/h)
75 mph (120.7 km/h)75.94 mph (122.22 km/h)
80 mph (128.75 km/h)81.01 mph (130.37 km/h)
85 mph (136.79 km/h)86.07 mph (138.51 km/h)
90 mph (144.84 km/h)91.13 mph (146.66 km/h)
95 mph (152.89 km/h)96.19 mph (154.81 km/h)
100 mph (160.93 km/h)101.26 mph (162.96 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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