Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
200/60r17 vs 180/65r16 Tire Comparison Side By Side
  200/60-17 180/65-16 Difference
Diameter inches (mm) 26.45 (671.8) 25.21 (640.4) -1.24 (-31.4) -4.7%
Width inches (mm) 7.87 (200) 7.09 (180) -0.79 (-20) -10%
Circum. inches (mm) 83.09 (2110.52) 79.21 (2011.88) -3.88 (-98.65) -4.7%
Sidewall Height inches (mm) 4.72 (120) 4.61 (117) -0.12 (-3) -2.5%
Revolutions per mile (km) 762.53 (473.82) 799.92 (497.05) 37.39 (23.23) 4.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.07 mph (30.68 km/h)
25 mph (40.23 km/h)23.83 mph (38.35 km/h)
30 mph (48.28 km/h)28.6 mph (46.02 km/h)
35 mph (56.33 km/h)33.36 mph (53.69 km/h)
40 mph (64.37 km/h)38.13 mph (61.37 km/h)
45 mph (72.42 km/h)42.9 mph (69.04 km/h)
50 mph (80.47 km/h)47.66 mph (76.71 km/h)
55 mph (88.51 km/h)52.43 mph (84.38 km/h)
60 mph (96.56 km/h)57.2 mph (92.05 km/h)
65 mph (104.61 km/h)61.96 mph (99.72 km/h)
70 mph (112.65 km/h)66.73 mph (107.39 km/h)
75 mph (120.7 km/h)71.49 mph (115.06 km/h)
80 mph (128.75 km/h)76.26 mph (122.73 km/h)
85 mph (136.79 km/h)81.03 mph (130.4 km/h)
90 mph (144.84 km/h)85.79 mph (138.07 km/h)
95 mph (152.89 km/h)90.56 mph (145.74 km/h)
100 mph (160.93 km/h)95.33 mph (153.41 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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