Wanna Play II

Klippy
That was my first reaction to that picture.
Perhaps its apparent "weakness" is an indication that you have to be equally gentle lwith the whols structure.   .

How long with your grass?  Rewind - I suspect the take-off might undo it.  You might have to triple the size of the tyre - what about just converting it to just a skid?

And the structure holding it - that looks optimistic for being able to ride over your big tufts without cracking. 

The wheel is about 1" in diameter, the same size as the FunCub, as I said , she may end up as a Hanger Queen.

equally gentle with the whole structure
. ie no landing in that cactus or thorn bush!