Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/80r14 vs 205/65r16 Tire Comparison Side By Side
  195/80-14 205/65-16 Difference
Diameter inches (mm) 26.28 (667.6) 26.49 (672.9) 0.21 (5.3) 0.8%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 82.57 (2097.33) 83.23 (2113.98) 0.66 (16.65) 0.8%
Sidewall Height inches (mm) 6.14 (156) 5.25 (133.25) -0.9 (-22.75) -14.6%
Revolutions per mile (km) 767.33 (476.8) 761.29 (473.04) -6.04 (-3.76) -0.8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.16 mph (32.44 km/h)
25 mph (40.23 km/h)25.2 mph (40.55 km/h)
30 mph (48.28 km/h)30.24 mph (48.66 km/h)
35 mph (56.33 km/h)35.28 mph (56.77 km/h)
40 mph (64.37 km/h)40.32 mph (64.88 km/h)
45 mph (72.42 km/h)45.36 mph (73 km/h)
50 mph (80.47 km/h)50.4 mph (81.11 km/h)
55 mph (88.51 km/h)55.44 mph (89.22 km/h)
60 mph (96.56 km/h)60.48 mph (97.33 km/h)
65 mph (104.61 km/h)65.52 mph (105.44 km/h)
70 mph (112.65 km/h)70.56 mph (113.55 km/h)
75 mph (120.7 km/h)75.6 mph (121.66 km/h)
80 mph (128.75 km/h)80.64 mph (129.77 km/h)
85 mph (136.79 km/h)85.67 mph (137.88 km/h)
90 mph (144.84 km/h)90.71 mph (145.99 km/h)
95 mph (152.89 km/h)95.75 mph (154.1 km/h)
100 mph (160.93 km/h)100.79 mph (162.21 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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