The kind of mud is making a big difference.
I live in a chalk and clay area with plenty of flint… I know, aren’t i lucky!!
Had a few rides in the rain or diving out between downpours and the semi fats worked lovely, the Crown Gem on the front was very good and the TB on the back gave good traction on climbs but offered very little grip in the corners. I actually like the grippy front slidey back combo so all good.
No rain for a couple of days, mild temperatures and high winds have seen the loose mud turn to sticky clag.
The semi fats are now something of a training aid, heavily clogged with mud and super adhesive thus gathering up impressive amounts of leaves.
Narrow, widely spaced knobbed mud tyres definitely work better here, espescially 29ers.
So will I be swapping my wheels about… possibly maybe.