I was just told, contrary to previous recommendations, that I do not need to have a 17" rim for my Snow tires for my 330cic sp. I was told, from a tire dealer, that I could go with a smaller rim with and "offset". What is an Offset, and will this work with my 330cic????? I was originally told that the 17" rims were mandatory for the sport package 330cic in order to clear the brakes? Help!!!