2011 550 x2 rear tires bighorn 2.0

Good day all,
I have a similar post to

Will bighorn 26×9-14s fit on the front of a 2011 550 X2? 26×11-14 on the rear fit?

I have some rubbing on the rear tires as per the photo on the bottom inside of rear fender well.

I am thinking of either wheel spacers or a small lift, but I would hate to sacrafice ride quality.
any ideas/thoughts?

Thank you
David

link to photo
Atv by absoluteairbrush | Photobucket