Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
160/60r18 vs 160/60r16 Tire Comparison Side By Side
  160/60-18 160/60-16 Difference
Diameter inches (mm) 25.56 (649.2) 23.56 (598.4) -2 (-50.8) -7.8%
Width inches (mm) 6.3 (160) 6.3 (160) 0 (0) 0%
Circum. inches (mm) 80.3 (2039.52) 74.01 (1879.93) -6.28 (-159.59) -7.8%
Sidewall Height inches (mm) 3.78 (96) 3.78 (96) 0 (0) 0%
Revolutions per mile (km) 789.08 (490.31) 856.07 (531.93) 66.99 (41.62) 8.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.43 mph (29.67 km/h)
25 mph (40.23 km/h)23.04 mph (37.09 km/h)
30 mph (48.28 km/h)27.65 mph (44.5 km/h)
35 mph (56.33 km/h)32.26 mph (51.92 km/h)
40 mph (64.37 km/h)36.87 mph (59.34 km/h)
45 mph (72.42 km/h)41.48 mph (66.75 km/h)
50 mph (80.47 km/h)46.09 mph (74.17 km/h)
55 mph (88.51 km/h)50.7 mph (81.59 km/h)
60 mph (96.56 km/h)55.3 mph (89 km/h)
65 mph (104.61 km/h)59.91 mph (96.42 km/h)
70 mph (112.65 km/h)64.52 mph (103.84 km/h)
75 mph (120.7 km/h)69.13 mph (111.26 km/h)
80 mph (128.75 km/h)73.74 mph (118.67 km/h)
85 mph (136.79 km/h)78.35 mph (126.09 km/h)
90 mph (144.84 km/h)82.96 mph (133.51 km/h)
95 mph (152.89 km/h)87.57 mph (140.92 km/h)
100 mph (160.93 km/h)92.17 mph (148.34 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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