Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/60r19 vs 245/35r19 Tire Comparison Side By Side
  175/60-19 245/35-19 Difference
Diameter inches (mm) 27.27 (692.6) 25.75 (654.1) -1.52 (-38.5) -5.6%
Width inches (mm) 6.89 (175) 9.65 (245) 2.76 (70) 40%
Circum. inches (mm) 85.66 (2175.87) 80.9 (2054.92) -4.76 (-120.95) -5.6%
Sidewall Height inches (mm) 4.13 (105) 3.38 (85.75) -0.76 (-19.25) -18.3%
Revolutions per mile (km) 739.63 (459.59) 783.17 (486.64) 43.53 (27.05) 5.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.89 mph (30.4 km/h)
25 mph (40.23 km/h)23.61 mph (38 km/h)
30 mph (48.28 km/h)28.33 mph (45.6 km/h)
35 mph (56.33 km/h)33.05 mph (53.2 km/h)
40 mph (64.37 km/h)37.78 mph (60.8 km/h)
45 mph (72.42 km/h)42.5 mph (68.39 km/h)
50 mph (80.47 km/h)47.22 mph (75.99 km/h)
55 mph (88.51 km/h)51.94 mph (83.59 km/h)
60 mph (96.56 km/h)56.66 mph (91.19 km/h)
65 mph (104.61 km/h)61.39 mph (98.79 km/h)
70 mph (112.65 km/h)66.11 mph (106.39 km/h)
75 mph (120.7 km/h)70.83 mph (113.99 km/h)
80 mph (128.75 km/h)75.55 mph (121.59 km/h)
85 mph (136.79 km/h)80.28 mph (129.19 km/h)
90 mph (144.84 km/h)85 mph (136.79 km/h)
95 mph (152.89 km/h)89.72 mph (144.39 km/h)
100 mph (160.93 km/h)94.44 mph (151.99 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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