Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/60r16 vs 225/60r16 Tire Comparison Side By Side
  255/60-16 225/60-16 Difference
Diameter inches (mm) 28.05 (712.4) 26.63 (676.4) -1.42 (-36) -5.1%
Width inches (mm) 10.04 (255) 8.86 (225) -1.18 (-30) -11.8%
Circum. inches (mm) 88.11 (2238.07) 83.66 (2124.97) -4.45 (-113.1) -5.1%
Sidewall Height inches (mm) 6.02 (153) 5.31 (135) -0.71 (-18) -11.8%
Revolutions per mile (km) 719.08 (446.81) 757.35 (470.59) 38.27 (23.78) 5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.99 mph (30.56 km/h)
25 mph (40.23 km/h)23.74 mph (38.2 km/h)
30 mph (48.28 km/h)28.48 mph (45.84 km/h)
35 mph (56.33 km/h)33.23 mph (53.48 km/h)
40 mph (64.37 km/h)37.98 mph (61.12 km/h)
45 mph (72.42 km/h)42.73 mph (68.76 km/h)
50 mph (80.47 km/h)47.47 mph (76.4 km/h)
55 mph (88.51 km/h)52.22 mph (84.04 km/h)
60 mph (96.56 km/h)56.97 mph (91.68 km/h)
65 mph (104.61 km/h)61.72 mph (99.32 km/h)
70 mph (112.65 km/h)66.46 mph (106.96 km/h)
75 mph (120.7 km/h)71.21 mph (114.6 km/h)
80 mph (128.75 km/h)75.96 mph (122.24 km/h)
85 mph (136.79 km/h)80.7 mph (129.88 km/h)
90 mph (144.84 km/h)85.45 mph (137.52 km/h)
95 mph (152.89 km/h)90.2 mph (145.16 km/h)
100 mph (160.93 km/h)94.95 mph (152.8 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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