Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r17 vs 170/60r17 Tire Comparison Side By Side
  160/60-17 170/60-17 Difference
Diameter inches (mm) 24.56 (623.8) 25.03 (635.8) 0.47 (12) 1.9%
Width inches (mm) 6.3 (160) 6.69 (170) 0.39 (10) 6.3%
Circum. inches (mm) 77.15 (1959.73) 78.64 (1997.42) 1.48 (37.7) 1.9%
Sidewall Height inches (mm) 3.78 (96) 4.02 (102) 0.24 (6) 6.3%
Revolutions per mile (km) 821.21 (510.27) 805.71 (500.64) -15.5 (-9.63) -1.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.38 mph (32.81 km/h)
25 mph (40.23 km/h)25.48 mph (41.01 km/h)
30 mph (48.28 km/h)30.58 mph (49.21 km/h)
35 mph (56.33 km/h)35.67 mph (57.41 km/h)
40 mph (64.37 km/h)40.77 mph (65.61 km/h)
45 mph (72.42 km/h)45.87 mph (73.81 km/h)
50 mph (80.47 km/h)50.96 mph (82.02 km/h)
55 mph (88.51 km/h)56.06 mph (90.22 km/h)
60 mph (96.56 km/h)61.15 mph (98.42 km/h)
65 mph (104.61 km/h)66.25 mph (106.62 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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