Anyone running this combination?

Literally impossible to get these tyres on the rims. Tried lube-ing the beads, making sure the tyre is sitting in the well etc.

Not even close. So frustrating

Try changing the rim strip for tubeless tape so it sits in a bit further.
Worked on my last troublesome combo.

Already got tubeless tape 😡

Yes. They are tight but with decent tyre levers they work. Make sure the bead is central the whole way round, make sure the last bit to fit is by the valve, gather the tyre together and force it down (with the valve at he bottom), use the tyre levers properly to stop it unseating.

They are a bastard but once on once and you have the knack it is fine.

Will they stretch once on? Don’t fancy my chances on a frosty morning should I need to insert an emergency tube with cold numb hands

Will they stretch once on?

Yes.

Whats the best way of pre-stretching a tyre?