Originally Posted by ruff rider
Larger tires as what you are looking at should not cause any warranty problem. If you have factory navigation the larger tires will cause it to not work properly. There is a fix if this happens with the nav unit. Unhook your battery negative cable from the battery for 1 hour. After you hook it back up the nav will work fine again.
I have read this here many times about the battery cable and I don't understand how this works.
Logically it makes no sense. Don't get me wrong, I am not shooting the messenger, just passing along a comment.
I mentioned this to my dealer when I was asking about calibrating the speedo after a tire upsize and he told me same thing, that it shouldn't affect the NAV system.
But peeps here swear by it, so it must be right. I just can't comprehend how it can happen