Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/40r10 vs 275/55r10 Tire Comparison Side By Side
  225/40-10 275/55-10 Difference
Diameter inches (mm) 17.09 (434) 21.91 (556.5) 4.82 (122.5) 28.2%
Width inches (mm) 8.86 (225) 10.83 (275) 1.97 (50) 22.2%
Circum. inches (mm) 53.68 (1363.45) 68.83 (1748.3) 15.15 (384.85) 28.2%
Sidewall Height inches (mm) 3.54 (90) 5.95 (151.25) 2.41 (61.25) 68.1%
Revolutions per mile (km) 1180.35 (733.43) 920.52 (571.98) -259.82 (-161.45) -22%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)25.65 mph (41.27 km/h)
25 mph (40.23 km/h)32.06 mph (51.59 km/h)
30 mph (48.28 km/h)38.47 mph (61.91 km/h)
35 mph (56.33 km/h)44.88 mph (72.23 km/h)
40 mph (64.37 km/h)51.29 mph (82.54 km/h)
45 mph (72.42 km/h)57.7 mph (92.86 km/h)
50 mph (80.47 km/h)64.11 mph (103.18 km/h)
55 mph (88.51 km/h)70.52 mph (113.5 km/h)
60 mph (96.56 km/h)76.94 mph (123.82 km/h)
65 mph (104.61 km/h)83.35 mph (134.13 km/h)
70 mph (112.65 km/h)89.76 mph (144.45 km/h)
75 mph (120.7 km/h)96.17 mph (154.77 km/h)
80 mph (128.75 km/h)102.58 mph (165.09 km/h)
85 mph (136.79 km/h)108.99 mph (175.41 km/h)
90 mph (144.84 km/h)115.4 mph (185.72 km/h)
95 mph (152.89 km/h)121.81 mph (196.04 km/h)
100 mph (160.93 km/h)128.23 mph (206.36 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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