42 cm frame and 26" wheels. (only in biking would they mix metric and imperial measurements, but that discussion is for another day) "new" LHT ! Sweet bike!
Last year I put Schwalbe Dureme tires on my bike. They are excellent. Way less rolling resistance than the Continental Contacts they replaced. Seem to have good flat resistance, but don't have a whole lot of miles on them yet. They are expensive, but its a hobby. We're supposed to enjoy spending money doing it.