Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/55r16 vs 215/60r17 Tire Comparison Side By Side
  195/55-16 215/60-17 Difference
Diameter inches (mm) 24.44 (620.9) 27.16 (689.8) 2.71 (68.9) 11.1%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 76.8 (1950.61) 85.32 (2167.07) 8.52 (216.46) 11.1%
Sidewall Height inches (mm) 4.22 (107.25) 5.08 (129) 0.86 (21.75) 20.3%
Revolutions per mile (km) 825.04 (512.66) 742.64 (461.45) -82.41 (-51.21) -10%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.22 mph (35.76 km/h)
25 mph (40.23 km/h)27.77 mph (44.7 km/h)
30 mph (48.28 km/h)33.33 mph (53.64 km/h)
35 mph (56.33 km/h)38.88 mph (62.58 km/h)
40 mph (64.37 km/h)44.44 mph (71.52 km/h)
45 mph (72.42 km/h)49.99 mph (80.46 km/h)
50 mph (80.47 km/h)55.55 mph (89.4 km/h)
55 mph (88.51 km/h)61.1 mph (98.34 km/h)
60 mph (96.56 km/h)66.66 mph (107.28 km/h)
65 mph (104.61 km/h)72.21 mph (116.22 km/h)
70 mph (112.65 km/h)77.77 mph (125.16 km/h)
75 mph (120.7 km/h)83.32 mph (134.09 km/h)
80 mph (128.75 km/h)88.88 mph (143.03 km/h)
85 mph (136.79 km/h)94.43 mph (151.97 km/h)
90 mph (144.84 km/h)99.99 mph (160.91 km/h)
95 mph (152.89 km/h)105.54 mph (169.85 km/h)
100 mph (160.93 km/h)111.1 mph (178.79 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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