Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
325/35r28 vs 35/13r26 Tire Comparison Side By Side
  325/35-28 35/13-26 Difference
Diameter inches (mm) 36.96 (938.7) 35.09 (891.4) -1.86 (-47.3) -5%
Width inches (mm) 12.8 (325) 12.99 (330) 0.2 (5) 1.5%
Circum. inches (mm) 116.1 (2949.01) 110.25 (2800.42) -5.85 (-148.6) -5%
Sidewall Height inches (mm) 4.48 (113.75) 4.55 (115.5) 0.07 (1.75) 1.5%
Revolutions per mile (km) 545.72 (339.1) 574.68 (357.09) 28.96 (17.99) 5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.99 mph (30.57 km/h)
25 mph (40.23 km/h)23.74 mph (38.21 km/h)
30 mph (48.28 km/h)28.49 mph (45.85 km/h)
35 mph (56.33 km/h)33.24 mph (53.49 km/h)
40 mph (64.37 km/h)37.98 mph (61.13 km/h)
45 mph (72.42 km/h)42.73 mph (68.77 km/h)
50 mph (80.47 km/h)47.48 mph (76.41 km/h)
55 mph (88.51 km/h)52.23 mph (84.05 km/h)
60 mph (96.56 km/h)56.98 mph (91.7 km/h)
65 mph (104.61 km/h)61.72 mph (99.34 km/h)
70 mph (112.65 km/h)66.47 mph (106.98 km/h)
75 mph (120.7 km/h)71.22 mph (114.62 km/h)
80 mph (128.75 km/h)75.97 mph (122.26 km/h)
85 mph (136.79 km/h)80.72 mph (129.9 km/h)
90 mph (144.84 km/h)85.47 mph (137.54 km/h)
95 mph (152.89 km/h)90.21 mph (145.18 km/h)
100 mph (160.93 km/h)94.96 mph (152.83 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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