Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
325/50r22 vs 35/13.5r22 Tire Comparison Side By Side
  325/50-22 35/13.5-22 Difference
Diameter inches (mm) 34.8 (883.8) 34.96 (888.08) 0.17 (4.28) 0.5%
Width inches (mm) 12.8 (325) 13.5 (343) 0.71 (18) 5.5%
Circum. inches (mm) 109.31 (2776.54) 109.84 (2789.99) 0.53 (13.45) 0.5%
Sidewall Height inches (mm) 6.4 (162.5) 6.48 (164.64) 0.08 (2.14) 1.3%
Revolutions per mile (km) 579.62 (360.16) 576.83 (358.42) -2.79 (-1.74) -0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.1 mph (32.34 km/h)
25 mph (40.23 km/h)25.12 mph (40.43 km/h)
30 mph (48.28 km/h)30.15 mph (48.51 km/h)
35 mph (56.33 km/h)35.17 mph (56.6 km/h)
40 mph (64.37 km/h)40.19 mph (64.69 km/h)
45 mph (72.42 km/h)45.22 mph (72.77 km/h)
50 mph (80.47 km/h)50.24 mph (80.86 km/h)
55 mph (88.51 km/h)55.27 mph (88.94 km/h)
60 mph (96.56 km/h)60.29 mph (97.03 km/h)
65 mph (104.61 km/h)65.31 mph (105.11 km/h)
70 mph (112.65 km/h)70.34 mph (113.2 km/h)
75 mph (120.7 km/h)75.36 mph (121.29 km/h)
80 mph (128.75 km/h)80.39 mph (129.37 km/h)
85 mph (136.79 km/h)85.41 mph (137.46 km/h)
90 mph (144.84 km/h)90.44 mph (145.54 km/h)
95 mph (152.89 km/h)95.46 mph (153.63 km/h)
100 mph (160.93 km/h)100.48 mph (161.71 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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