I'm not sure where you got 675 from,
27inches times 25mm is 675mm. But my calculator screwed up the deduction, which obviously should be 667mm. None of which jives with either 622mm or British 27" of 630mm. An inch has 25mm, so 27x25=675 - how do they figure their conversions to decimals?
There are no other 700C diameters, you're probably thinking of tire widths.
I think you are right there. Just to muddy up the waters a bit more.
I recommend a read of sheldonbrown.com on this subject. It'll link to all relevant topics of converting from 27 to 700C.
I did. Several times, in my frustration! Didn't get it cleared up for me.
You're filling in some unknowns with assumptions in your quest for Univegan (is that a word? LOL) makeover.
Guilty as charged. But it is unintentional.
And yes, like I stated they will fit.
And that is all that matters! I really appreciate all the help and advice I am getting, and look forward to the day when I won't have to ask dumb questions any longer! Thanks for your patience!