Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/30r22 vs 265/25r22 Tire Comparison Side By Side
  265/30-22 265/25-22 Difference
Diameter inches (mm) 28.26 (717.8) 27.22 (691.3) -1.04 (-26.5) -3.7%
Width inches (mm) 10.43 (265) 10.43 (265) 0 (0) 0%
Circum. inches (mm) 88.78 (2255.04) 85.5 (2171.78) -3.28 (-83.25) -3.7%
Sidewall Height inches (mm) 3.13 (79.5) 2.61 (66.25) -0.52 (-13.25) -16.7%
Revolutions per mile (km) 713.67 (443.45) 741.02 (460.45) 27.36 (17) 3.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.26 mph (31 km/h)
25 mph (40.23 km/h)24.08 mph (38.75 km/h)
30 mph (48.28 km/h)28.89 mph (46.5 km/h)
35 mph (56.33 km/h)33.71 mph (54.25 km/h)
40 mph (64.37 km/h)38.52 mph (62 km/h)
45 mph (72.42 km/h)43.34 mph (69.75 km/h)
50 mph (80.47 km/h)48.15 mph (77.5 km/h)
55 mph (88.51 km/h)52.97 mph (85.25 km/h)
60 mph (96.56 km/h)57.78 mph (93 km/h)
65 mph (104.61 km/h)62.6 mph (100.75 km/h)
70 mph (112.65 km/h)67.42 mph (108.5 km/h)
75 mph (120.7 km/h)72.23 mph (116.24 km/h)
80 mph (128.75 km/h)77.05 mph (123.99 km/h)
85 mph (136.79 km/h)81.86 mph (131.74 km/h)
90 mph (144.84 km/h)86.68 mph (139.49 km/h)
95 mph (152.89 km/h)91.49 mph (147.24 km/h)
100 mph (160.93 km/h)96.31 mph (154.99 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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