how easy is it to remove the wheel? Looks abit tricky...
Want to change the tyres.
As you have the posh Di2 I'm afraid I can't be of much help.
Presumably you grasp that the 15mm nuts are on the end of a solid axle, so all you have to do is slacken those.
Watch for any lip in the coloured washer, that needs to go back in the same place.
Nor sure if you have had discs before, but the rotor will come out from between the pads.
Thing to watch there is not to squeeze the brake when the wheel's out.
There might be a bit of coloured plastic in the accessories to stuff between the pads, if not, a folded bit of cereal packet will do.
Hopefully there's some instructions about disconnecting the Di2 hub.