Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
205/40r17 vs 195/55r15 Tire Comparison Side By Side
  205/40-17 195/55-15 Difference
Diameter inches (mm) 23.46 (595.8) 23.44 (595.5) -0.01 (-0.3) -0.1%
Width inches (mm) 8.07 (205) 7.68 (195) -0.39 (-10) -4.9%
Circum. inches (mm) 73.69 (1871.76) 73.65 (1870.82) -0.04 (-0.94) -0.1%
Sidewall Height inches (mm) 3.23 (82) 4.22 (107.25) 0.99 (25.25) 30.8%
Revolutions per mile (km) 859.8 (534.26) 860.24 (534.52) 0.43 (0.27) 0.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.99 mph (32.17 km/h)
25 mph (40.23 km/h)24.99 mph (40.21 km/h)
30 mph (48.28 km/h)29.98 mph (48.26 km/h)
35 mph (56.33 km/h)34.98 mph (56.3 km/h)
40 mph (64.37 km/h)39.98 mph (64.34 km/h)
45 mph (72.42 km/h)44.98 mph (72.38 km/h)
50 mph (80.47 km/h)49.97 mph (80.43 km/h)
55 mph (88.51 km/h)54.97 mph (88.47 km/h)
60 mph (96.56 km/h)59.97 mph (96.51 km/h)
65 mph (104.61 km/h)64.97 mph (104.55 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
21892543273928602990308331863307347536423829397842484546477949285012531957486679
Better Fuel Economy Factory Ratios Increased Power

Most Popular 205/40-R17 Comparisons

To Top