I've built a wheel for my mothers 'road' bike. I say road bike as it was purchased in about 1960 and has little in relation to what would be called a road bike today. It's probably more similar in shape to a touring bike of today. It is a wrecker of a bike used for going to the shops but she loves it all the same (as do I).
It originally had 27" wheels but the back has already been replaced with a 700c so the wheel I have built is a 700c Mavic A119 on a Alfine dynamo hub. My questions is what sort of tyre would be appropriate to put on that wheel but not be so narrow as to be uncomfortable or so wide as to cause clearance issues. I can't measure the existing tyre section as I live miles away and it is a present.
Wired bead and cheap (<£25) options please.