Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
275/25r22 vs 245/25r22 Tire Comparison Side By Side
  275/25-22 245/25-22 Difference
Diameter inches (mm) 27.41 (696.3) 26.82 (681.3) -0.59 (-15) -2.2%
Width inches (mm) 10.83 (275) 9.65 (245) -1.18 (-30) -10.9%
Circum. inches (mm) 86.12 (2187.49) 84.27 (2140.37) -1.86 (-47.12) -2.2%
Sidewall Height inches (mm) 2.71 (68.75) 2.41 (61.25) -0.3 (-7.5) -10.9%
Revolutions per mile (km) 735.7 (457.14) 751.9 (467.21) 16.2 (10.06) 2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.57 mph (31.49 km/h)
25 mph (40.23 km/h)24.46 mph (39.37 km/h)
30 mph (48.28 km/h)29.35 mph (47.24 km/h)
35 mph (56.33 km/h)34.25 mph (55.11 km/h)
40 mph (64.37 km/h)39.14 mph (62.99 km/h)
45 mph (72.42 km/h)44.03 mph (70.86 km/h)
50 mph (80.47 km/h)48.92 mph (78.73 km/h)
55 mph (88.51 km/h)53.82 mph (86.61 km/h)
60 mph (96.56 km/h)58.71 mph (94.48 km/h)
65 mph (104.61 km/h)63.6 mph (102.35 km/h)
70 mph (112.65 km/h)68.49 mph (110.23 km/h)
75 mph (120.7 km/h)73.38 mph (118.1 km/h)
80 mph (128.75 km/h)78.28 mph (125.97 km/h)
85 mph (136.79 km/h)83.17 mph (133.85 km/h)
90 mph (144.84 km/h)88.06 mph (141.72 km/h)
95 mph (152.89 km/h)92.95 mph (149.59 km/h)
100 mph (160.93 km/h)97.85 mph (157.47 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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