Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r17 vs 215/55r17 Tire Comparison Side By Side
  195/60-17 215/55-17 Difference
Diameter inches (mm) 26.21 (665.8) 26.31 (668.3) 0.1 (2.5) 0.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 82.35 (2091.67) 82.66 (2099.53) 0.31 (7.85) 0.4%
Sidewall Height inches (mm) 4.61 (117) 4.66 (118.25) 0.05 (1.25) 1.1%
Revolutions per mile (km) 769.41 (478.09) 766.53 (476.3) -2.88 (-1.79) -0.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.08 mph (32.31 km/h)
25 mph (40.23 km/h)25.09 mph (40.38 km/h)
30 mph (48.28 km/h)30.11 mph (48.46 km/h)
35 mph (56.33 km/h)35.13 mph (56.54 km/h)
40 mph (64.37 km/h)40.15 mph (64.62 km/h)
45 mph (72.42 km/h)45.17 mph (72.69 km/h)
50 mph (80.47 km/h)50.19 mph (80.77 km/h)
55 mph (88.51 km/h)55.21 mph (88.85 km/h)
60 mph (96.56 km/h)60.23 mph (96.92 km/h)
65 mph (104.61 km/h)65.24 mph (105 km/h)
70 mph (112.65 km/h)70.26 mph (113.08 km/h)
75 mph (120.7 km/h)75.28 mph (121.15 km/h)
80 mph (128.75 km/h)80.3 mph (129.23 km/h)
85 mph (136.79 km/h)85.32 mph (137.31 km/h)
90 mph (144.84 km/h)90.34 mph (145.39 km/h)
95 mph (152.89 km/h)95.36 mph (153.46 km/h)
100 mph (160.93 km/h)100.38 mph (161.54 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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