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 150/70r17 Tire Comparison Side By Side
  160/60-17 150/70-17 Difference
Diameter inches (mm) 24.56 (623.8) 25.27 (641.8) 0.71 (18) 2.9%
Width inches (mm) 6.3 (160) 5.91 (150) -0.39 (-10) -6.3%
Circum. inches (mm) 77.15 (1959.73) 79.38 (2016.27) 2.23 (56.55) 2.9%
Sidewall Height inches (mm) 3.78 (96) 4.13 (105) 0.35 (9) 9.4%
Revolutions per mile (km) 821.21 (510.27) 798.18 (495.96) -23.03 (-14.31) -2.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.58 mph (33.12 km/h)
25 mph (40.23 km/h)25.72 mph (41.39 km/h)
30 mph (48.28 km/h)30.87 mph (49.67 km/h)
35 mph (56.33 km/h)36.01 mph (57.95 km/h)
40 mph (64.37 km/h)41.15 mph (66.23 km/h)
45 mph (72.42 km/h)46.3 mph (74.51 km/h)
50 mph (80.47 km/h)51.44 mph (82.79 km/h)
55 mph (88.51 km/h)56.59 mph (91.07 km/h)
60 mph (96.56 km/h)61.73 mph (99.35 km/h)
65 mph (104.61 km/h)66.88 mph (107.63 km/h)
70 mph (112.65 km/h)72.02 mph (115.9 km/h)
75 mph (120.7 km/h)77.16 mph (124.18 km/h)
80 mph (128.75 km/h)82.31 mph (132.46 km/h)
85 mph (136.79 km/h)87.45 mph (140.74 km/h)
90 mph (144.84 km/h)92.6 mph (149.02 km/h)
95 mph (152.89 km/h)97.74 mph (157.3 km/h)
100 mph (160.93 km/h)102.89 mph (165.58 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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