So if I were to find a set with 18'' fronts i would want them to be 18x9 front and 18x9.5? And would the offset be different on the 18 than the 17. I know the factory had 16x7.5 45 offset and 16x8.5 35 offset, im just trying to figure out if u go up 1 width size with rim size. Sorry for all the questions, don't know much about rim sizing.