Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/75r16 vs 205/55r16 Tire Comparison Side By Side
  195/75-16 205/55-16 Difference
Diameter inches (mm) 27.52 (698.9) 24.88 (631.9) -2.64 (-67) -9.6%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 86.44 (2195.66) 78.16 (1985.17) -8.29 (-210.49) -9.6%
Sidewall Height inches (mm) 5.76 (146.25) 4.44 (112.75) -1.32 (-33.5) -22.9%
Revolutions per mile (km) 732.97 (455.44) 810.68 (503.73) 77.72 (48.29) 10.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.08 mph (29.1 km/h)
25 mph (40.23 km/h)22.6 mph (36.38 km/h)
30 mph (48.28 km/h)27.12 mph (43.65 km/h)
35 mph (56.33 km/h)31.64 mph (50.93 km/h)
40 mph (64.37 km/h)36.17 mph (58.2 km/h)
45 mph (72.42 km/h)40.69 mph (65.48 km/h)
50 mph (80.47 km/h)45.21 mph (72.75 km/h)
55 mph (88.51 km/h)49.73 mph (80.03 km/h)
60 mph (96.56 km/h)54.25 mph (87.3 km/h)
65 mph (104.61 km/h)58.77 mph (94.58 km/h)
70 mph (112.65 km/h)63.29 mph (101.85 km/h)
75 mph (120.7 km/h)67.81 mph (109.13 km/h)
80 mph (128.75 km/h)72.33 mph (116.41 km/h)
85 mph (136.79 km/h)76.85 mph (123.68 km/h)
90 mph (144.84 km/h)81.37 mph (130.96 km/h)
95 mph (152.89 km/h)85.89 mph (138.23 km/h)
100 mph (160.93 km/h)90.41 mph (145.51 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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