I'm currently looking for a set of tires for the grand prix in my sig. I've found the set I want just nned some help figuring out the difference in the size. The tires that currently on the car now are 225-60-16 (stock wheels). The tires I'm looking at are bf goodrich g-force T/A KDW 2 225-55ZR16 whats the diff are the going to be a touch wider?