Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/45r17 vs 205/50r16 Tire Comparison Side By Side
  215/45-17 205/50-16 Difference
Diameter inches (mm) 24.62 (625.3) 24.07 (611.4) -0.55 (-13.9) -2.2%
Width inches (mm) 8.46 (215) 8.07 (205) -0.39 (-10) -4.7%
Circum. inches (mm) 77.34 (1964.44) 75.62 (1920.77) -1.72 (-43.67) -2.2%
Sidewall Height inches (mm) 3.81 (96.75) 4.04 (102.5) 0.23 (5.75) 5.9%
Revolutions per mile (km) 819.24 (509.05) 837.86 (520.62) 18.63 (11.57) 2.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.56 mph (31.47 km/h)
25 mph (40.23 km/h)24.44 mph (39.34 km/h)
30 mph (48.28 km/h)29.33 mph (47.21 km/h)
35 mph (56.33 km/h)34.22 mph (55.08 km/h)
40 mph (64.37 km/h)39.11 mph (62.94 km/h)
45 mph (72.42 km/h)44 mph (70.81 km/h)
50 mph (80.47 km/h)48.89 mph (78.68 km/h)
55 mph (88.51 km/h)53.78 mph (86.55 km/h)
60 mph (96.56 km/h)58.67 mph (94.41 km/h)
65 mph (104.61 km/h)63.56 mph (102.28 km/h)
70 mph (112.65 km/h)68.44 mph (110.15 km/h)
75 mph (120.7 km/h)73.33 mph (118.02 km/h)
80 mph (128.75 km/h)78.22 mph (125.89 km/h)
85 mph (136.79 km/h)83.11 mph (133.75 km/h)
90 mph (144.84 km/h)88 mph (141.62 km/h)
95 mph (152.89 km/h)92.89 mph (149.49 km/h)
100 mph (160.93 km/h)97.78 mph (157.36 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
21322477266827852913300331033221338435483729387441374428465548004881518155986505
Better Fuel Economy Factory Ratios Increased Power

Most Popular 215/45-R17 Comparisons

To Top