Correct me if I am wrong... but in previous years of the X the rims were only 7" wide. Going 12.5" wide or wider on a 7" rim is not a good combo. The tires turn into balloons on a small rim.

I will be getting another set of 6 onr 4.5 rims and MT/Rs. I will keep that in mind, but the rims will need to be wider.

Thanks for the comments.