Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/75r14 vs 205/65r14 Tire Comparison Side By Side
  205/75-14 205/65-14 Difference
Diameter inches (mm) 26.11 (663.1) 24.49 (622.1) -1.61 (-41) -6.2%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 82.02 (2083.19) 76.94 (1954.38) -5.07 (-128.81) -6.2%
Sidewall Height inches (mm) 6.05 (153.75) 5.25 (133.25) -0.81 (-20.5) -13.3%
Revolutions per mile (km) 772.54 (480.03) 823.45 (511.67) 50.91 (31.64) 6.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.76 mph (30.2 km/h)
25 mph (40.23 km/h)23.45 mph (37.75 km/h)
30 mph (48.28 km/h)28.15 mph (45.3 km/h)
35 mph (56.33 km/h)32.84 mph (52.84 km/h)
40 mph (64.37 km/h)37.53 mph (60.39 km/h)
45 mph (72.42 km/h)42.22 mph (67.94 km/h)
50 mph (80.47 km/h)46.91 mph (75.49 km/h)
55 mph (88.51 km/h)51.6 mph (83.04 km/h)
60 mph (96.56 km/h)56.29 mph (90.59 km/h)
65 mph (104.61 km/h)60.98 mph (98.14 km/h)
70 mph (112.65 km/h)65.67 mph (105.69 km/h)
75 mph (120.7 km/h)70.36 mph (113.24 km/h)
80 mph (128.75 km/h)75.05 mph (120.79 km/h)
85 mph (136.79 km/h)79.74 mph (128.34 km/h)
90 mph (144.84 km/h)84.44 mph (135.89 km/h)
95 mph (152.89 km/h)89.13 mph (143.43 km/h)
100 mph (160.93 km/h)93.82 mph (150.98 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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