i've read a lot of great reviews about the Pirreli Sport Demon- both here and other internet sources. it sounds to me like the only "con" about this tire is it's short life. but around here(seattle), i've heard about a handful of guys dumping their bikes because of this tire giving out on them. they say that the tire can offer no warning(wobble/wash), and will immediately lose bite when it has had enough. very curious to get feedback about this tire. thanks.