Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/50r14 vs 205/35r14 Tire Comparison Side By Side
  205/50-14 205/35-14 Difference
Diameter inches (mm) 22.07 (560.6) 19.65 (499.1) -2.42 (-61.5) -11%
Width inches (mm) 8.07 (205) 8.07 (205) 0 (0) 0%
Circum. inches (mm) 69.34 (1761.18) 61.73 (1567.97) -7.61 (-193.21) -11%
Sidewall Height inches (mm) 4.04 (102.5) 2.82 (71.75) -1.21 (-30.75) -30%
Revolutions per mile (km) 913.79 (567.8) 1026.39 (637.77) 112.6 (69.97) 12.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)17.81 mph (28.66 km/h)
25 mph (40.23 km/h)22.26 mph (35.82 km/h)
30 mph (48.28 km/h)26.71 mph (42.98 km/h)
35 mph (56.33 km/h)31.16 mph (50.15 km/h)
40 mph (64.37 km/h)35.61 mph (57.31 km/h)
45 mph (72.42 km/h)40.06 mph (64.48 km/h)
50 mph (80.47 km/h)44.51 mph (71.64 km/h)
55 mph (88.51 km/h)48.97 mph (78.8 km/h)
60 mph (96.56 km/h)53.42 mph (85.97 km/h)
65 mph (104.61 km/h)57.87 mph (93.13 km/h)
70 mph (112.65 km/h)62.32 mph (100.3 km/h)
75 mph (120.7 km/h)66.77 mph (107.46 km/h)
80 mph (128.75 km/h)71.22 mph (114.62 km/h)
85 mph (136.79 km/h)75.68 mph (121.79 km/h)
90 mph (144.84 km/h)80.13 mph (128.95 km/h)
95 mph (152.89 km/h)84.58 mph (136.12 km/h)
100 mph (160.93 km/h)89.03 mph (143.28 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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