Yes 700c will fit- but bear in mind - in my experience at least- you won’t be able to fit the traditional size 32mm size tyres (1 1/4 inch) and still have room for mudguards.
Maximum tyre size probably 28mm with space for guards - possibly less depending on frame.
Ah good as I have a set of 23’s hanging up in the shed so we should be all good. Apart from having no traction, no mudguards, no (or little) puncture protection lol
Yes 700c will fit- but bear in mind - in my experience at least- you won’t be able to fit the traditional size 32mm size tyres (1 1/4 inch) and still have room for mudguards.
Maximum tyre size probably 28mm with space for guards - possibly less depending on frame.