Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/65r17 vs 205/60r17 Tire Comparison Side By Side
  205/65-17 205/60-17 Difference
Diameter inches (mm) 27.49 (698.3) 26.69 (677.8) -0.81 (-20.5) -2.9%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 86.37 (2193.77) 83.83 (2129.37) -2.54 (-64.4) -2.9%
Sidewall Height inches (mm) 5.25 (133.25) 4.84 (123) -0.4 (-10.25) -7.7%
Revolutions per mile (km) 733.6 (455.83) 755.78 (469.62) 22.19 (13.79) 3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.41 mph (31.24 km/h)
25 mph (40.23 km/h)24.27 mph (39.05 km/h)
30 mph (48.28 km/h)29.12 mph (46.86 km/h)
35 mph (56.33 km/h)33.97 mph (54.67 km/h)
40 mph (64.37 km/h)38.83 mph (62.48 km/h)
45 mph (72.42 km/h)43.68 mph (70.29 km/h)
50 mph (80.47 km/h)48.53 mph (78.11 km/h)
55 mph (88.51 km/h)53.39 mph (85.92 km/h)
60 mph (96.56 km/h)58.24 mph (93.73 km/h)
65 mph (104.61 km/h)63.09 mph (101.54 km/h)
70 mph (112.65 km/h)67.95 mph (109.35 km/h)
75 mph (120.7 km/h)72.8 mph (117.16 km/h)
80 mph (128.75 km/h)77.65 mph (124.97 km/h)
85 mph (136.79 km/h)82.5 mph (132.78 km/h)
90 mph (144.84 km/h)87.36 mph (140.59 km/h)
95 mph (152.89 km/h)92.21 mph (148.4 km/h)
100 mph (160.93 km/h)97.06 mph (156.21 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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