Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/45r19 vs 245/45r19 Tire Comparison Side By Side
  295/45-19 245/45-19 Difference
Diameter inches (mm) 29.45 (748.1) 27.68 (703.1) -1.77 (-45) -6%
Width inches (mm) 11.61 (295) 9.65 (245) -1.97 (-50) -16.9%
Circum. inches (mm) 92.53 (2350.23) 86.96 (2208.85) -5.57 (-141.37) -6%
Sidewall Height inches (mm) 5.23 (132.75) 4.34 (110.25) -0.89 (-22.5) -16.9%
Revolutions per mile (km) 684.76 (425.49) 728.59 (452.72) 43.83 (27.23) 6.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.8 mph (30.25 km/h)
25 mph (40.23 km/h)23.5 mph (37.81 km/h)
30 mph (48.28 km/h)28.2 mph (45.38 km/h)
35 mph (56.33 km/h)32.89 mph (52.94 km/h)
40 mph (64.37 km/h)37.59 mph (60.5 km/h)
45 mph (72.42 km/h)42.29 mph (68.06 km/h)
50 mph (80.47 km/h)46.99 mph (75.63 km/h)
55 mph (88.51 km/h)51.69 mph (83.19 km/h)
60 mph (96.56 km/h)56.39 mph (90.75 km/h)
65 mph (104.61 km/h)61.09 mph (98.32 km/h)
70 mph (112.65 km/h)65.79 mph (105.88 km/h)
75 mph (120.7 km/h)70.49 mph (113.44 km/h)
80 mph (128.75 km/h)75.19 mph (121 km/h)
85 mph (136.79 km/h)79.89 mph (128.57 km/h)
90 mph (144.84 km/h)84.59 mph (136.13 km/h)
95 mph (152.89 km/h)89.29 mph (143.69 km/h)
100 mph (160.93 km/h)93.98 mph (151.25 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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