Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/55r16 vs 175/60r16 Tire Comparison Side By Side
  175/55-16 175/60-16 Difference
Diameter inches (mm) 23.58 (598.9) 24.27 (616.4) 0.69 (17.5) 2.9%
Width inches (mm) 6.89 (175) 6.89 (175) 0 (0) 0%
Circum. inches (mm) 74.07 (1881.5) 76.24 (1936.48) 2.16 (54.98) 2.9%
Sidewall Height inches (mm) 3.79 (96.25) 4.13 (105) 0.34 (8.75) 9.1%
Revolutions per mile (km) 855.35 (531.49) 831.07 (516.4) -24.28 (-15.09) -2.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.58 mph (33.13 km/h)
25 mph (40.23 km/h)25.73 mph (41.41 km/h)
30 mph (48.28 km/h)30.88 mph (49.69 km/h)
35 mph (56.33 km/h)36.02 mph (57.97 km/h)
40 mph (64.37 km/h)41.17 mph (66.25 km/h)
45 mph (72.42 km/h)46.31 mph (74.54 km/h)
50 mph (80.47 km/h)51.46 mph (82.82 km/h)
55 mph (88.51 km/h)56.61 mph (91.1 km/h)
60 mph (96.56 km/h)61.75 mph (99.38 km/h)
65 mph (104.61 km/h)66.9 mph (107.66 km/h)
70 mph (112.65 km/h)72.05 mph (115.95 km/h)
75 mph (120.7 km/h)77.19 mph (124.23 km/h)
80 mph (128.75 km/h)82.34 mph (132.51 km/h)
85 mph (136.79 km/h)87.48 mph (140.79 km/h)
90 mph (144.84 km/h)92.63 mph (149.07 km/h)
95 mph (152.89 km/h)97.78 mph (157.36 km/h)
100 mph (160.93 km/h)102.92 mph (165.64 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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