Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
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215/40r19 vs 195/35r19 Tire Comparison Side By Side
  215/40-19 195/35-19 Difference
Diameter inches (mm) 25.77 (654.6) 24.37 (619.1) -1.4 (-35.5) -5.4%
Width inches (mm) 8.46 (215) 7.68 (195) -0.79 (-20) -9.3%
Circum. inches (mm) 80.96 (2056.49) 76.57 (1944.96) -4.39 (-111.53) -5.4%
Sidewall Height inches (mm) 3.39 (86) 2.69 (68.25) -0.7 (-17.75) -20.6%
Revolutions per mile (km) 782.57 (486.27) 827.44 (514.15) 44.87 (27.88) 5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.92 mph (30.44 km/h)
25 mph (40.23 km/h)23.64 mph (38.05 km/h)
30 mph (48.28 km/h)28.37 mph (45.66 km/h)
35 mph (56.33 km/h)33.1 mph (53.27 km/h)
40 mph (64.37 km/h)37.83 mph (60.88 km/h)
45 mph (72.42 km/h)42.56 mph (68.49 km/h)
50 mph (80.47 km/h)47.29 mph (76.1 km/h)
55 mph (88.51 km/h)52.02 mph (83.71 km/h)
60 mph (96.56 km/h)56.75 mph (91.32 km/h)
65 mph (104.61 km/h)61.47 mph (98.93 km/h)
70 mph (112.65 km/h)66.2 mph (106.54 km/h)
75 mph (120.7 km/h)70.93 mph (114.16 km/h)
80 mph (128.75 km/h)75.66 mph (121.77 km/h)
85 mph (136.79 km/h)80.39 mph (129.38 km/h)
90 mph (144.84 km/h)85.12 mph (136.99 km/h)
95 mph (152.89 km/h)89.85 mph (144.6 km/h)
100 mph (160.93 km/h)94.58 mph (152.21 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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