On a related matter, I am new to wire wheels. Do they have inner tubes? I assume not, given that several people here have said that slow deflation can occur at the point where the spokes join the inside of the rim; correct?
Older ones generally require inner tubes, newer ones do not. I've just got a new set from MWS (who supply MMC?) and they are tubeless and have a rubber strip around the rim sealing the spokes/rim.