450HO mud lite xtr upgrade awsome

So I put my 4 new mud lite xtr tires on my 450 HO F 26x9x12 R 26x11x12… No problem fitting with the 4+3 off set on the front tires….moved up two sizes from the 24’s… Not a real noticeable loss of low end power, but the proper use of hi and low range make a Hugh difference…first impression excellent tire, great in the mud, sticks like glue on rock at a slow crawl. The one thing I don’t like is the dodgey action you start getting at about 40mph. The tires are set @ 9psi never messed withe tire pressure yet?? Maybe that will help?? Gonna go on another ride before I decide in the clutch kit or not?? I also lost 150 – 200 rpm @ the top end… final thought for now… A dam good tire