Firstof all, we need to divide 205 mm (width) by 25.4 (mm to inch conversion), which will give us a width of 8.1″. Then, 55% of the 8.1″ will result in 4.4″ sidewall. To get the total height or tire diameter, we need to sum the 16″ rim diameter with two of the sidewall heights. It will result in a 24.8″ total tire diameter (or height).
Tools& Tech: 225-55R16 tire size comparison with Size calculator. Use our tire calculator to compare tire sizes based on tire diameter, radius, sidewall height, circumference, revs per mile and speedometer difference.