Mike "Wuzzy121". Rest in peace, brother

Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/55r16 vs 215/55r16 Tire Comparison Side By Side
  205/55-16 215/55-16 Difference
Diameter inches (mm) 24.88 (631.9) 25.31 (642.9) 0.43 (11) 1.7%
Width inches (mm) 8.07 (205) 8.46 (215) 0.39 (10) 4.9%
Circum. inches (mm) 78.16 (1985.17) 79.52 (2019.73) 1.36 (34.56) 1.7%
Sidewall Height inches (mm) 4.44 (112.75) 4.66 (118.25) 0.22 (5.5) 4.9%
Revolutions per mile (km) 810.68 (503.73) 796.81 (495.11) -13.87 (-8.62) -1.7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.35 mph (32.75 km/h)
25 mph (40.23 km/h)25.44 mph (40.93 km/h)
30 mph (48.28 km/h)30.52 mph (49.12 km/h)
35 mph (56.33 km/h)35.61 mph (57.31 km/h)
40 mph (64.37 km/h)40.7 mph (65.49 km/h)
45 mph (72.42 km/h)45.78 mph (73.68 km/h)
50 mph (80.47 km/h)50.87 mph (81.87 km/h)
55 mph (88.51 km/h)55.96 mph (90.05 km/h)
60 mph (96.56 km/h)61.04 mph (98.24 km/h)
65 mph (104.61 km/h)66.13 mph (106.43 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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