28’s or 30’s

First couple of things, sorry if this post has been beaten to death, did a quick search couldn’t find anything. The other is I’m the parts/service manager for a repair shop.

I’ve got a 16 Commander 800 XT, looking at getting a little more aggressive tire. The bighorn 2s are great for what i ride 75% of the time but i do tend to play in the mud. I kind of had my mind made up on a set of 28 inch mega mayhem’s. As i am getting the money put away for the new tires i get my new Western Powersports book and noticed GBC grim reapers now come in a 30 inch, kind of got me thinking again, kind of brought up a couple questions i didn’t think i needed answered.

little more background. The 2 machines i ride with the most are a maverick xds and a rzr xp1k, both turbo’d. riding on just about everything, have to hit black top roads to get to the trails we ride. bout 25% pavement, 50% dirt road/hardpack trails, 25% mud and rocks.

I guess im looking for some recommendations. Any benefits other than the obvious for 28’s or 30’s?