Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
315/55r22 vs 275/45r22 Tire Comparison Side By Side
  315/55-22 275/45-22 Difference
Diameter inches (mm) 35.64 (905.3) 31.74 (806.3) -3.9 (-99) -10.9%
Width inches (mm) 12.4 (315) 10.83 (275) -1.57 (-40) -12.7%
Circum. inches (mm) 111.97 (2844.08) 99.73 (2533.07) -12.24 (-311.02) -10.9%
Sidewall Height inches (mm) 6.82 (173.25) 4.87 (123.75) -1.95 (-49.5) -28.6%
Revolutions per mile (km) 565.86 (351.61) 635.33 (394.78) 69.48 (43.17) 12.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.81 mph (28.67 km/h)
25 mph (40.23 km/h)22.27 mph (35.83 km/h)
30 mph (48.28 km/h)26.72 mph (43 km/h)
35 mph (56.33 km/h)31.17 mph (50.17 km/h)
40 mph (64.37 km/h)35.63 mph (57.33 km/h)
45 mph (72.42 km/h)40.08 mph (64.5 km/h)
50 mph (80.47 km/h)44.53 mph (71.67 km/h)
55 mph (88.51 km/h)48.99 mph (78.83 km/h)
60 mph (96.56 km/h)53.44 mph (86 km/h)
65 mph (104.61 km/h)57.89 mph (93.17 km/h)
70 mph (112.65 km/h)62.35 mph (100.33 km/h)
75 mph (120.7 km/h)66.8 mph (107.5 km/h)
80 mph (128.75 km/h)71.25 mph (114.67 km/h)
85 mph (136.79 km/h)75.7 mph (121.84 km/h)
90 mph (144.84 km/h)80.16 mph (129 km/h)
95 mph (152.89 km/h)84.61 mph (136.17 km/h)
100 mph (160.93 km/h)89.06 mph (143.34 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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