Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/82r13 vs 165/75r13 Tire Comparison Side By Side
  165/82-13 165/75-13 Difference
Diameter inches (mm) 23.65 (600.8) 22.74 (577.7) -0.91 (-23.1) -3.8%
Width inches (mm) 6.5 (165) 6.5 (165) 0 (0) 0%
Circum. inches (mm) 74.31 (1887.47) 71.45 (1814.9) -2.86 (-72.57) -3.8%
Sidewall Height inches (mm) 5.33 (135.3) 4.87 (123.75) -0.45 (-11.55) -8.5%
Revolutions per mile (km) 852.65 (529.81) 886.74 (550.99) 34.09 (21.19) 4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.23 mph (30.95 km/h)
25 mph (40.23 km/h)24.04 mph (38.69 km/h)
30 mph (48.28 km/h)28.85 mph (46.42 km/h)
35 mph (56.33 km/h)33.65 mph (54.16 km/h)
40 mph (64.37 km/h)38.46 mph (61.9 km/h)
45 mph (72.42 km/h)43.27 mph (69.64 km/h)
50 mph (80.47 km/h)48.08 mph (77.37 km/h)
55 mph (88.51 km/h)52.89 mph (85.11 km/h)
60 mph (96.56 km/h)57.69 mph (92.85 km/h)
65 mph (104.61 km/h)62.5 mph (100.59 km/h)
70 mph (112.65 km/h)67.31 mph (108.32 km/h)
75 mph (120.7 km/h)72.12 mph (116.06 km/h)
80 mph (128.75 km/h)76.92 mph (123.8 km/h)
85 mph (136.79 km/h)81.73 mph (131.53 km/h)
90 mph (144.84 km/h)86.54 mph (139.27 km/h)
95 mph (152.89 km/h)91.35 mph (147.01 km/h)
100 mph (160.93 km/h)96.16 mph (154.75 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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