Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/75r16 vs 205/60r16 Tire Comparison Side By Side
  175/75-16 205/60-16 Difference
Diameter inches (mm) 26.33 (668.9) 25.69 (652.4) -0.65 (-16.5) -2.5%
Width inches (mm) 6.89 (175) 8.07 (205) 1.18 (30) 17.1%
Circum. inches (mm) 82.73 (2101.41) 80.69 (2049.58) -2.04 (-51.84) -2.5%
Sidewall Height inches (mm) 5.17 (131.25) 4.84 (123) -0.32 (-8.25) -6.3%
Revolutions per mile (km) 765.84 (475.87) 785.21 (487.91) 19.37 (12.04) 2.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.51 mph (31.39 km/h)
25 mph (40.23 km/h)24.38 mph (39.24 km/h)
30 mph (48.28 km/h)29.26 mph (47.09 km/h)
35 mph (56.33 km/h)34.14 mph (54.94 km/h)
40 mph (64.37 km/h)39.01 mph (62.79 km/h)
45 mph (72.42 km/h)43.89 mph (70.63 km/h)
50 mph (80.47 km/h)48.77 mph (78.48 km/h)
55 mph (88.51 km/h)53.64 mph (86.33 km/h)
60 mph (96.56 km/h)58.52 mph (94.18 km/h)
65 mph (104.61 km/h)63.4 mph (102.03 km/h)
70 mph (112.65 km/h)68.27 mph (109.88 km/h)
75 mph (120.7 km/h)73.15 mph (117.72 km/h)
80 mph (128.75 km/h)78.03 mph (125.57 km/h)
85 mph (136.79 km/h)82.9 mph (133.42 km/h)
90 mph (144.84 km/h)87.78 mph (141.27 km/h)
95 mph (152.89 km/h)92.66 mph (149.12 km/h)
100 mph (160.93 km/h)97.53 mph (156.96 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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