Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
305/35r22 vs 265/35r22 Tire Comparison Side By Side
  305/35-22 265/35-22 Difference
Diameter inches (mm) 30.41 (772.3) 29.3 (744.3) -1.1 (-28) -3.6%
Width inches (mm) 12.01 (305) 10.43 (265) -1.57 (-40) -13.1%
Circum. inches (mm) 95.52 (2426.25) 92.06 (2338.29) -3.46 (-87.96) -3.6%
Sidewall Height inches (mm) 4.2 (106.75) 3.65 (92.75) -0.55 (-14) -13.1%
Revolutions per mile (km) 663.3 (412.16) 688.26 (427.66) 24.95 (15.51) 3.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.27 mph (31.02 km/h)
25 mph (40.23 km/h)24.09 mph (38.77 km/h)
30 mph (48.28 km/h)28.91 mph (46.53 km/h)
35 mph (56.33 km/h)33.73 mph (54.28 km/h)
40 mph (64.37 km/h)38.55 mph (62.04 km/h)
45 mph (72.42 km/h)43.37 mph (69.79 km/h)
50 mph (80.47 km/h)48.19 mph (77.55 km/h)
55 mph (88.51 km/h)53.01 mph (85.3 km/h)
60 mph (96.56 km/h)57.82 mph (93.06 km/h)
65 mph (104.61 km/h)62.64 mph (100.81 km/h)
70 mph (112.65 km/h)67.46 mph (108.57 km/h)
75 mph (120.7 km/h)72.28 mph (116.32 km/h)
80 mph (128.75 km/h)77.1 mph (124.08 km/h)
85 mph (136.79 km/h)81.92 mph (131.83 km/h)
90 mph (144.84 km/h)86.74 mph (139.59 km/h)
95 mph (152.89 km/h)91.56 mph (147.34 km/h)
100 mph (160.93 km/h)96.37 mph (155.1 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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