I have an '06 SXT with the stock 17" alloys. I just switched them out with a set of 18" wheels from a 2006 300C (non AWD). They look good and went on fine except for one little thing. The center caps will not go back on and it seems like the height of the lug nuts is the problem (it's honestly hard to tell). I don't feel like they have to be forced in and I'm worried that I would crack or break them trying to force them on. Could it be that the lugs on the 300C are different as far as height goes?? I am little stumped and embarrassed (feel like I am not doing that "one little thing" right) and any help is greatly appreciated!