Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/90r16 vs 24/11r22.5 Tire Comparison Side By Side
  225/90-16 24/11-22.5 Difference
Diameter inches (mm) 31.94 (811.4) 24.04 (610.56) -7.91 (-200.84) -24.8%
Width inches (mm) 8.86 (225) 10.98 (279) 2.13 (54) 24%
Circum. inches (mm) 100.36 (2549.09) 75.52 (1918.13) -24.84 (-630.96) -24.8%
Sidewall Height inches (mm) 7.97 (202.5) 0.77 (19.53) -7.2 (-182.97) -90.4%
Revolutions per mile (km) 631.34 (392.3) 839.02 (521.34) 207.68 (129.04) 32.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)15.05 mph (24.22 km/h)
25 mph (40.23 km/h)18.81 mph (30.27 km/h)
30 mph (48.28 km/h)22.57 mph (36.33 km/h)
35 mph (56.33 km/h)26.34 mph (42.38 km/h)
40 mph (64.37 km/h)30.1 mph (48.44 km/h)
45 mph (72.42 km/h)33.86 mph (54.49 km/h)
50 mph (80.47 km/h)37.62 mph (60.55 km/h)
55 mph (88.51 km/h)41.39 mph (66.6 km/h)
60 mph (96.56 km/h)45.15 mph (72.66 km/h)
65 mph (104.61 km/h)48.91 mph (78.71 km/h)
70 mph (112.65 km/h)52.67 mph (84.77 km/h)
75 mph (120.7 km/h)56.44 mph (90.82 km/h)
80 mph (128.75 km/h)60.2 mph (96.88 km/h)
85 mph (136.79 km/h)63.96 mph (102.93 km/h)
90 mph (144.84 km/h)67.72 mph (108.99 km/h)
95 mph (152.89 km/h)71.49 mph (115.04 km/h)
100 mph (160.93 km/h)75.25 mph (121.1 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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