Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r15 vs 150/60r17 Tire Comparison Side By Side
  160/60-15 150/60-17 Difference
Diameter inches (mm) 22.56 (573) 24.09 (611.8) 1.53 (38.8) 6.8%
Width inches (mm) 6.3 (160) 5.91 (150) -0.39 (-10) -6.3%
Circum. inches (mm) 70.87 (1800.13) 75.67 (1922.03) 4.8 (121.89) 6.8%
Sidewall Height inches (mm) 3.78 (96) 3.54 (90) -0.24 (-6) -6.2%
Revolutions per mile (km) 894.01 (555.51) 837.32 (520.28) -56.7 (-35.23) -6.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.35 mph (34.37 km/h)
25 mph (40.23 km/h)26.69 mph (42.96 km/h)
30 mph (48.28 km/h)32.03 mph (51.55 km/h)
35 mph (56.33 km/h)37.37 mph (60.14 km/h)
40 mph (64.37 km/h)42.71 mph (68.73 km/h)
45 mph (72.42 km/h)48.05 mph (77.32 km/h)
50 mph (80.47 km/h)53.39 mph (85.92 km/h)
55 mph (88.51 km/h)58.72 mph (94.51 km/h)
60 mph (96.56 km/h)64.06 mph (103.1 km/h)
65 mph (104.61 km/h)69.4 mph (111.69 km/h)
70 mph (112.65 km/h)74.74 mph (120.28 km/h)
75 mph (120.7 km/h)80.08 mph (128.87 km/h)
80 mph (128.75 km/h)85.42 mph (137.47 km/h)
85 mph (136.79 km/h)90.76 mph (146.06 km/h)
90 mph (144.84 km/h)96.09 mph (154.65 km/h)
95 mph (152.89 km/h)101.43 mph (163.24 km/h)
100 mph (160.93 km/h)106.77 mph (171.83 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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