Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/45r22 vs 275/45r22 Tire Comparison Side By Side
  255/45-22 275/45-22 Difference
Diameter inches (mm) 31.04 (788.3) 31.74 (806.3) 0.71 (18) 2.3%
Width inches (mm) 10.04 (255) 10.83 (275) 0.79 (20) 7.8%
Circum. inches (mm) 97.5 (2476.52) 99.73 (2533.07) 2.23 (56.55) 2.3%
Sidewall Height inches (mm) 4.52 (114.75) 4.87 (123.75) 0.35 (9) 7.8%
Revolutions per mile (km) 649.84 (403.79) 635.33 (394.78) -14.51 (-9.01) -2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.46 mph (32.92 km/h)
25 mph (40.23 km/h)25.57 mph (41.15 km/h)
30 mph (48.28 km/h)30.69 mph (49.38 km/h)
35 mph (56.33 km/h)35.8 mph (57.61 km/h)
40 mph (64.37 km/h)40.91 mph (65.84 km/h)
45 mph (72.42 km/h)46.03 mph (74.07 km/h)
50 mph (80.47 km/h)51.14 mph (82.3 km/h)
55 mph (88.51 km/h)56.26 mph (90.54 km/h)
60 mph (96.56 km/h)61.37 mph (98.77 km/h)
65 mph (104.61 km/h)66.48 mph (107 km/h)
70 mph (112.65 km/h)71.6 mph (115.23 km/h)
75 mph (120.7 km/h)76.71 mph (123.46 km/h)
80 mph (128.75 km/h)81.83 mph (131.69 km/h)
85 mph (136.79 km/h)86.94 mph (139.92 km/h)
90 mph (144.84 km/h)92.06 mph (148.15 km/h)
95 mph (152.89 km/h)97.17 mph (156.38 km/h)
100 mph (160.93 km/h)102.28 mph (164.61 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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