Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/55r17 vs 255/35r22 Tire Comparison Side By Side
  225/55-17 255/35-22 Difference
Diameter inches (mm) 26.74 (679.3) 29.03 (737.3) 2.28 (58) 8.5%
Width inches (mm) 8.86 (225) 10.04 (255) 1.18 (30) 13.3%
Circum. inches (mm) 84.02 (2134.08) 91.19 (2316.3) 7.17 (182.21) 8.5%
Sidewall Height inches (mm) 4.87 (123.75) 3.51 (89.25) -1.36 (-34.5) -27.9%
Revolutions per mile (km) 754.11 (468.58) 694.79 (431.72) -59.32 (-36.86) -7.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.71 mph (34.94 km/h)
25 mph (40.23 km/h)27.13 mph (43.67 km/h)
30 mph (48.28 km/h)32.56 mph (52.4 km/h)
35 mph (56.33 km/h)37.99 mph (61.14 km/h)
40 mph (64.37 km/h)43.42 mph (69.87 km/h)
45 mph (72.42 km/h)48.84 mph (78.6 km/h)
50 mph (80.47 km/h)54.27 mph (87.34 km/h)
55 mph (88.51 km/h)59.7 mph (96.07 km/h)
60 mph (96.56 km/h)65.12 mph (104.81 km/h)
65 mph (104.61 km/h)70.55 mph (113.54 km/h)
70 mph (112.65 km/h)75.98 mph (122.27 km/h)
75 mph (120.7 km/h)81.4 mph (131.01 km/h)
80 mph (128.75 km/h)86.83 mph (139.74 km/h)
85 mph (136.79 km/h)92.26 mph (148.47 km/h)
90 mph (144.84 km/h)97.68 mph (157.21 km/h)
95 mph (152.89 km/h)103.11 mph (165.94 km/h)
100 mph (160.93 km/h)108.54 mph (174.68 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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