Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/40r17 vs 205/40r17 Tire Comparison Side By Side
  215/40-17 205/40-17 Difference
Diameter inches (mm) 23.77 (603.8) 23.46 (595.8) -0.31 (-8) -1.3%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 74.68 (1896.89) 73.69 (1871.76) -0.99 (-25.13) -1.3%
Sidewall Height inches (mm) 3.39 (86) 3.23 (82) -0.16 (-4) -4.7%
Revolutions per mile (km) 848.41 (527.18) 859.8 (534.26) 11.39 (7.08) 1.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.74 mph (31.76 km/h)
25 mph (40.23 km/h)24.67 mph (39.7 km/h)
30 mph (48.28 km/h)29.6 mph (47.64 km/h)
35 mph (56.33 km/h)34.54 mph (55.58 km/h)
40 mph (64.37 km/h)39.47 mph (63.52 km/h)
45 mph (72.42 km/h)44.4 mph (71.46 km/h)
50 mph (80.47 km/h)49.34 mph (79.4 km/h)
55 mph (88.51 km/h)54.27 mph (87.34 km/h)
60 mph (96.56 km/h)59.21 mph (95.28 km/h)
65 mph (104.61 km/h)64.14 mph (103.22 km/h)
70 mph (112.65 km/h)69.07 mph (111.16 km/h)
75 mph (120.7 km/h)74.01 mph (119.1 km/h)
80 mph (128.75 km/h)78.94 mph (127.04 km/h)
85 mph (136.79 km/h)83.87 mph (134.98 km/h)
90 mph (144.84 km/h)88.81 mph (142.92 km/h)
95 mph (152.89 km/h)93.74 mph (150.86 km/h)
100 mph (160.93 km/h)98.68 mph (158.8 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
21882542273728582989308231843305347336413827397642464544477649255009531657456676
Better Fuel Economy Factory Ratios Increased Power

Most Popular 215/40-R17 Comparisons

To Top