Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
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205/65r16 vs 195/50r16 Tire Comparison Side By Side
  205/65-16 195/50-16 Difference
Diameter inches (mm) 26.49 (672.9) 23.68 (601.4) -2.81 (-71.5) -10.6%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 83.23 (2113.98) 74.38 (1889.35) -8.84 (-224.62) -10.6%
Sidewall Height inches (mm) 5.25 (133.25) 3.84 (97.5) -1.41 (-35.75) -26.8%
Revolutions per mile (km) 761.29 (473.04) 851.8 (529.28) 90.51 (56.24) 11.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.87 mph (28.77 km/h)
25 mph (40.23 km/h)22.34 mph (35.96 km/h)
30 mph (48.28 km/h)26.81 mph (43.15 km/h)
35 mph (56.33 km/h)31.28 mph (50.34 km/h)
40 mph (64.37 km/h)35.75 mph (57.53 km/h)
45 mph (72.42 km/h)40.22 mph (64.73 km/h)
50 mph (80.47 km/h)44.69 mph (71.92 km/h)
55 mph (88.51 km/h)49.16 mph (79.11 km/h)
60 mph (96.56 km/h)53.62 mph (86.3 km/h)
65 mph (104.61 km/h)58.09 mph (93.49 km/h)
70 mph (112.65 km/h)62.56 mph (100.68 km/h)
75 mph (120.7 km/h)67.03 mph (107.88 km/h)
80 mph (128.75 km/h)71.5 mph (115.07 km/h)
85 mph (136.79 km/h)75.97 mph (122.26 km/h)
90 mph (144.84 km/h)80.44 mph (129.45 km/h)
95 mph (152.89 km/h)84.91 mph (136.64 km/h)
100 mph (160.93 km/h)89.37 mph (143.83 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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