Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/70r16 vs 215/55r16 Tire Comparison Side By Side
  195/70-16 215/55-16 Difference
Diameter inches (mm) 26.75 (679.4) 25.31 (642.9) -1.44 (-36.5) -5.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 84.03 (2134.4) 79.52 (2019.73) -4.51 (-114.67) -5.4%
Sidewall Height inches (mm) 5.37 (136.5) 4.66 (118.25) -0.72 (-18.25) -13.4%
Revolutions per mile (km) 754 (468.52) 796.81 (495.11) 42.81 (26.6) 5.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.93 mph (30.46 km/h)
25 mph (40.23 km/h)23.66 mph (38.07 km/h)
30 mph (48.28 km/h)28.39 mph (45.69 km/h)
35 mph (56.33 km/h)33.12 mph (53.3 km/h)
40 mph (64.37 km/h)37.85 mph (60.92 km/h)
45 mph (72.42 km/h)42.58 mph (68.53 km/h)
50 mph (80.47 km/h)47.31 mph (76.14 km/h)
55 mph (88.51 km/h)52.05 mph (83.76 km/h)
60 mph (96.56 km/h)56.78 mph (91.37 km/h)
65 mph (104.61 km/h)61.51 mph (98.99 km/h)
70 mph (112.65 km/h)66.24 mph (106.6 km/h)
75 mph (120.7 km/h)70.97 mph (114.22 km/h)
80 mph (128.75 km/h)75.7 mph (121.83 km/h)
85 mph (136.79 km/h)80.43 mph (129.45 km/h)
90 mph (144.84 km/h)85.16 mph (137.06 km/h)
95 mph (152.89 km/h)89.9 mph (144.67 km/h)
100 mph (160.93 km/h)94.63 mph (152.29 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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