Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/35r22 vs 32/8.5r17 Tire Comparison Side By Side
  265/35-22 32/8.5-17 Difference
Diameter inches (mm) 29.3 (744.3) 31.97 (811.96) 2.66 (67.66) 9.1%
Width inches (mm) 10.43 (265) 8.5 (216) -1.93 (-49) -18.5%
Circum. inches (mm) 92.06 (2338.29) 100.43 (2550.85) 8.37 (212.56) 9.1%
Sidewall Height inches (mm) 3.65 (92.75) 7.48 (190.08) 3.83 (97.33) 104.9%
Revolutions per mile (km) 688.26 (427.66) 630.91 (392.03) -57.35 (-35.64) -8.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.82 mph (35.11 km/h)
25 mph (40.23 km/h)27.27 mph (43.89 km/h)
30 mph (48.28 km/h)32.73 mph (52.67 km/h)
35 mph (56.33 km/h)38.18 mph (61.45 km/h)
40 mph (64.37 km/h)43.64 mph (70.23 km/h)
45 mph (72.42 km/h)49.09 mph (79 km/h)
50 mph (80.47 km/h)54.55 mph (87.78 km/h)
55 mph (88.51 km/h)60 mph (96.56 km/h)
60 mph (96.56 km/h)65.45 mph (105.34 km/h)
65 mph (104.61 km/h)70.91 mph (114.12 km/h)
70 mph (112.65 km/h)76.36 mph (122.9 km/h)
75 mph (120.7 km/h)81.82 mph (131.67 km/h)
80 mph (128.75 km/h)87.27 mph (140.45 km/h)
85 mph (136.79 km/h)92.73 mph (149.23 km/h)
90 mph (144.84 km/h)98.18 mph (158.01 km/h)
95 mph (152.89 km/h)103.64 mph (166.79 km/h)
100 mph (160.93 km/h)109.09 mph (175.56 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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