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 215/60r14 Tire Comparison Side By Side
  205/50-14 215/60-14 Difference
Diameter inches (mm) 22.07 (560.6) 24.16 (613.6) 2.09 (53) 9.5%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 69.34 (1761.18) 75.89 (1927.68) 6.56 (166.5) 9.5%
Sidewall Height inches (mm) 4.04 (102.5) 5.08 (129) 1.04 (26.5) 25.9%
Revolutions per mile (km) 913.79 (567.8) 834.86 (518.76) -78.93 (-49.04) -8.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.89 mph (35.23 km/h)
25 mph (40.23 km/h)27.36 mph (44.04 km/h)
30 mph (48.28 km/h)32.84 mph (52.84 km/h)
35 mph (56.33 km/h)38.31 mph (61.65 km/h)
40 mph (64.37 km/h)43.78 mph (70.46 km/h)
45 mph (72.42 km/h)49.25 mph (79.27 km/h)
50 mph (80.47 km/h)54.73 mph (88.07 km/h)
55 mph (88.51 km/h)60.2 mph (96.88 km/h)
60 mph (96.56 km/h)65.67 mph (105.69 km/h)
65 mph (104.61 km/h)71.15 mph (114.5 km/h)
70 mph (112.65 km/h)76.62 mph (123.3 km/h)
75 mph (120.7 km/h)82.09 mph (132.11 km/h)
80 mph (128.75 km/h)87.56 mph (140.92 km/h)
85 mph (136.79 km/h)93.04 mph (149.73 km/h)
90 mph (144.84 km/h)98.51 mph (158.53 km/h)
95 mph (152.89 km/h)103.98 mph (167.34 km/h)
100 mph (160.93 km/h)109.45 mph (176.15 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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