Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
225/50r14 vs 265/60r14 Tire Comparison Side By Side
  225/50-14 265/60-14 Difference
Diameter inches (mm) 22.86 (580.6) 26.52 (673.6) 3.66 (93) 16%
Width inches (mm) 8.86 (225) 10.43 (265) 1.57 (40) 17.8%
Circum. inches (mm) 71.81 (1824.01) 83.31 (2116.18) 11.5 (292.17) 16%
Sidewall Height inches (mm) 4.43 (112.5) 6.26 (159) 1.83 (46.5) 41.3%
Revolutions per mile (km) 882.31 (548.24) 760.5 (472.55) -121.82 (-75.69) -13.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)23.2 mph (37.34 km/h)
25 mph (40.23 km/h)29 mph (46.68 km/h)
30 mph (48.28 km/h)34.81 mph (56.01 km/h)
35 mph (56.33 km/h)40.61 mph (65.35 km/h)
40 mph (64.37 km/h)46.41 mph (74.69 km/h)
45 mph (72.42 km/h)52.21 mph (84.02 km/h)
50 mph (80.47 km/h)58.01 mph (93.36 km/h)
55 mph (88.51 km/h)63.81 mph (102.69 km/h)
60 mph (96.56 km/h)69.61 mph (112.03 km/h)
65 mph (104.61 km/h)75.41 mph (121.36 km/h)
70 mph (112.65 km/h)81.21 mph (130.7 km/h)
75 mph (120.7 km/h)87.01 mph (140.03 km/h)
80 mph (128.75 km/h)92.81 mph (149.37 km/h)
85 mph (136.79 km/h)98.62 mph (158.71 km/h)
90 mph (144.84 km/h)104.42 mph (168.04 km/h)
95 mph (152.89 km/h)110.22 mph (177.38 km/h)
100 mph (160.93 km/h)116.02 mph (186.71 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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