soho2009 makes a good point, the stock tires are pretty weak. my rear tire wore out after about 750 miles (though I'm heavy, so that may have contributed). also, despite many adjustments I couldn't get the rear tire to stop rubbing against the fenders. so I put 28s on as replacements, and they have been fine (and more punctureproof). if you buy this bike I would beg your LBS to put a punctureproof tire on the back so you don't have to worry about it.
glad you had a better experience than I did. i came pretty close to selling mine though I figure it was worth keeping around for show.