This question talks about fitting a tyre back onto a rim, but I'd like to know how to get the tyre off in the first place. Especially if the tyre is very tight, or the dip in the middle of the rim section is very shallow.
Most of my bikes have 406 wheels, and I use Marathon Plus tyres which are quite rigid, so they're really hard to remove without breaking tyre levers or pinching the tube.
What's the best way to get those tyres off the rim so I can fix a puncture?
(I've just realised we don't actually have this question, or any answers!)