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 195/60r16 Tire Comparison Side By Side
  175/55-16 195/60-16 Difference
Diameter inches (mm) 23.58 (598.9) 25.21 (640.4) 1.63 (41.5) 6.9%
Width inches (mm) 6.89 (175) 7.68 (195) 0.79 (20) 11.4%
Circum. inches (mm) 74.07 (1881.5) 79.21 (2011.88) 5.13 (130.38) 6.9%
Sidewall Height inches (mm) 3.79 (96.25) 4.61 (117) 0.82 (20.75) 21.6%
Revolutions per mile (km) 855.35 (531.49) 799.92 (497.05) -55.43 (-34.44) -6.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.39 mph (34.42 km/h)
25 mph (40.23 km/h)26.73 mph (43.02 km/h)
30 mph (48.28 km/h)32.08 mph (51.63 km/h)
35 mph (56.33 km/h)37.43 mph (60.23 km/h)
40 mph (64.37 km/h)42.77 mph (68.83 km/h)
45 mph (72.42 km/h)48.12 mph (77.44 km/h)
50 mph (80.47 km/h)53.46 mph (86.04 km/h)
55 mph (88.51 km/h)58.81 mph (94.65 km/h)
60 mph (96.56 km/h)64.16 mph (103.25 km/h)
65 mph (104.61 km/h)69.5 mph (111.86 km/h)
70 mph (112.65 km/h)74.85 mph (120.46 km/h)
75 mph (120.7 km/h)80.2 mph (129.06 km/h)
80 mph (128.75 km/h)85.54 mph (137.67 km/h)
85 mph (136.79 km/h)90.89 mph (146.27 km/h)
90 mph (144.84 km/h)96.24 mph (154.88 km/h)
95 mph (152.89 km/h)101.58 mph (163.48 km/h)
100 mph (160.93 km/h)106.93 mph (172.09 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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