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 205/60r13 Tire Comparison Side By Side
  165/82-13 205/60-13 Difference
Diameter inches (mm) 23.65 (600.8) 22.69 (576.2) -0.97 (-24.6) -4.1%
Width inches (mm) 6.5 (165) 8.07 (205) 1.57 (40) 24.2%
Circum. inches (mm) 74.31 (1887.47) 71.27 (1810.19) -3.04 (-77.28) -4.1%
Sidewall Height inches (mm) 5.33 (135.3) 4.84 (123) -0.48 (-12.3) -9.1%
Revolutions per mile (km) 852.65 (529.81) 889.05 (552.43) 36.4 (22.62) 4.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.18 mph (30.87 km/h)
25 mph (40.23 km/h)23.98 mph (38.59 km/h)
30 mph (48.28 km/h)28.77 mph (46.3 km/h)
35 mph (56.33 km/h)33.57 mph (54.02 km/h)
40 mph (64.37 km/h)38.36 mph (61.74 km/h)
45 mph (72.42 km/h)43.16 mph (69.46 km/h)
50 mph (80.47 km/h)47.95 mph (77.17 km/h)
55 mph (88.51 km/h)52.75 mph (84.89 km/h)
60 mph (96.56 km/h)57.54 mph (92.61 km/h)
65 mph (104.61 km/h)62.34 mph (100.32 km/h)
70 mph (112.65 km/h)67.13 mph (108.04 km/h)
75 mph (120.7 km/h)71.93 mph (115.76 km/h)
80 mph (128.75 km/h)76.72 mph (123.48 km/h)
85 mph (136.79 km/h)81.52 mph (131.19 km/h)
90 mph (144.84 km/h)86.31 mph (138.91 km/h)
95 mph (152.89 km/h)91.11 mph (146.63 km/h)
100 mph (160.93 km/h)95.91 mph (154.35 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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