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 195/70r14 Tire Comparison Side By Side
  205/55-16 195/70-14 Difference
Diameter inches (mm) 24.88 (631.9) 24.75 (628.6) -0.13 (-3.3) -0.5%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 78.16 (1985.17) 77.75 (1974.81) -0.41 (-10.37) -0.5%
Sidewall Height inches (mm) 4.44 (112.75) 5.37 (136.5) 0.94 (23.75) 21.1%
Revolutions per mile (km) 810.68 (503.73) 814.94 (506.38) 4.26 (2.64) 0.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.9 mph (32.02 km/h)
25 mph (40.23 km/h)24.87 mph (40.02 km/h)
30 mph (48.28 km/h)29.84 mph (48.03 km/h)
35 mph (56.33 km/h)34.82 mph (56.03 km/h)
40 mph (64.37 km/h)39.79 mph (64.04 km/h)
45 mph (72.42 km/h)44.76 mph (72.04 km/h)
50 mph (80.47 km/h)49.74 mph (80.05 km/h)
55 mph (88.51 km/h)54.71 mph (88.05 km/h)
60 mph (96.56 km/h)59.69 mph (96.06 km/h)
65 mph (104.61 km/h)64.66 mph (104.06 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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