Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/60r16 vs 165/65r16 Tire Comparison Side By Side
  175/60-16 165/65-16 Difference
Diameter inches (mm) 24.27 (616.4) 24.44 (620.9) 0.18 (4.5) 0.7%
Width inches (mm) 6.89 (175) 6.5 (165) -0.39 (-10) -5.7%
Circum. inches (mm) 76.24 (1936.48) 76.8 (1950.61) 0.56 (14.14) 0.7%
Sidewall Height inches (mm) 4.13 (105) 4.22 (107.25) 0.09 (2.25) 2.1%
Revolutions per mile (km) 831.07 (516.4) 825.04 (512.66) -6.02 (-3.74) -0.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.15 mph (32.42 km/h)
25 mph (40.23 km/h)25.18 mph (40.53 km/h)
30 mph (48.28 km/h)30.22 mph (48.63 km/h)
35 mph (56.33 km/h)35.26 mph (56.74 km/h)
40 mph (64.37 km/h)40.29 mph (64.84 km/h)
45 mph (72.42 km/h)45.33 mph (72.95 km/h)
50 mph (80.47 km/h)50.37 mph (81.05 km/h)
55 mph (88.51 km/h)55.4 mph (89.16 km/h)
60 mph (96.56 km/h)60.44 mph (97.27 km/h)
65 mph (104.61 km/h)65.47 mph (105.37 km/h)
70 mph (112.65 km/h)70.51 mph (113.48 km/h)
75 mph (120.7 km/h)75.55 mph (121.58 km/h)
80 mph (128.75 km/h)80.58 mph (129.69 km/h)
85 mph (136.79 km/h)85.62 mph (137.79 km/h)
90 mph (144.84 km/h)90.66 mph (145.9 km/h)
95 mph (152.89 km/h)95.69 mph (154 km/h)
100 mph (160.93 km/h)100.73 mph (162.11 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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