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 215/45r17 Tire Comparison Side By Side
  195/60-17 215/45-17 Difference
Diameter inches (mm) 26.21 (665.8) 24.62 (625.3) -1.59 (-40.5) -6.1%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 82.35 (2091.67) 77.34 (1964.44) -5.01 (-127.23) -6.1%
Sidewall Height inches (mm) 4.61 (117) 3.81 (96.75) -0.8 (-20.25) -17.3%
Revolutions per mile (km) 769.41 (478.09) 819.24 (509.05) 49.83 (30.97) 6.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.78 mph (30.23 km/h)
25 mph (40.23 km/h)23.48 mph (37.79 km/h)
30 mph (48.28 km/h)28.18 mph (45.34 km/h)
35 mph (56.33 km/h)32.87 mph (52.9 km/h)
40 mph (64.37 km/h)37.57 mph (60.46 km/h)
45 mph (72.42 km/h)42.26 mph (68.02 km/h)
50 mph (80.47 km/h)46.96 mph (75.57 km/h)
55 mph (88.51 km/h)51.65 mph (83.13 km/h)
60 mph (96.56 km/h)56.35 mph (90.69 km/h)
65 mph (104.61 km/h)61.05 mph (98.24 km/h)
70 mph (112.65 km/h)65.74 mph (105.8 km/h)
75 mph (120.7 km/h)70.44 mph (113.36 km/h)
80 mph (128.75 km/h)75.13 mph (120.92 km/h)
85 mph (136.79 km/h)79.83 mph (128.47 km/h)
90 mph (144.84 km/h)84.53 mph (136.03 km/h)
95 mph (152.89 km/h)89.22 mph (143.59 km/h)
100 mph (160.93 km/h)93.92 mph (151.15 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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