Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/35r17 vs 225/25r19 Tire Comparison Side By Side
  225/35-17 225/25-19 Difference
Diameter inches (mm) 23.2 (589.3) 23.43 (595.1) 0.23 (5.8) 1%
Width inches (mm) 8.86 (225) 8.86 (225) 0 (0) 0%
Circum. inches (mm) 72.89 (1851.34) 73.6 (1869.56) 0.72 (18.22) 1%
Sidewall Height inches (mm) 3.1 (78.75) 2.21 (56.25) -0.89 (-22.5) -28.6%
Revolutions per mile (km) 869.29 (540.15) 860.81 (534.88) -8.47 (-5.26) -1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.2 mph (32.5 km/h)
25 mph (40.23 km/h)25.25 mph (40.63 km/h)
30 mph (48.28 km/h)30.3 mph (48.76 km/h)
35 mph (56.33 km/h)35.34 mph (56.88 km/h)
40 mph (64.37 km/h)40.39 mph (65.01 km/h)
45 mph (72.42 km/h)45.44 mph (73.13 km/h)
50 mph (80.47 km/h)50.49 mph (81.26 km/h)
55 mph (88.51 km/h)55.54 mph (89.39 km/h)
60 mph (96.56 km/h)60.59 mph (97.51 km/h)
65 mph (104.61 km/h)65.64 mph (105.64 km/h)
70 mph (112.65 km/h)70.69 mph (113.76 km/h)
75 mph (120.7 km/h)75.74 mph (121.89 km/h)
80 mph (128.75 km/h)80.79 mph (130.01 km/h)
85 mph (136.79 km/h)85.84 mph (138.14 km/h)
90 mph (144.84 km/h)90.89 mph (146.27 km/h)
95 mph (152.89 km/h)95.94 mph (154.39 km/h)
100 mph (160.93 km/h)100.98 mph (162.52 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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