Anyone have 28" bighorn 1.0's on stock wheels on their trail without a lift or spacers?

I've been looking at doing 28's too and from what I'm told they should fit without issue. My dealer seems pretty confident at least lol. Says they do 27's a lot with some room to spare. He did tell me though that that's the biggest he would go without changing the clutch setup for it. Even at that size he felt I might want to make some adjustments.

[2015 Z Force 800 53/Trail EPS]

You can do 28s.