I am very surprised by the good performance "Weisse Luft" got out of his Supersonics. I had 4 (!) of them jump of my rims for no apparent reason in one season, one while i was standing, two at lower speeds and one spectacularly jumped of my front rim on the descent from Penser Joch (Passo Pennes on some maps) while making aronud 40-50km/h - boy was i glad i managed to stop without crashing...
Needless to say, after that they were off my bike in no time at all, and i haven't touched them since. The on that lasted longest had about 800km on it and it started to develop the typical "Conti flat" already.
Slightly OT: Buddy of mine had Supersonics for MTB sponsored for the "Transalp Challenge" Race; he and his partner punctured several times a day. No way a couple of grams saved will ever make up for the time lost in a race with a puncture. Tires are a bad part to save weight on, IMO.
I also had very bad experiences with the Supersonic inner tubes, the puncture rate about tripled while i used them. Now i use "Bohle extralite"s with good results.
I have to stress that at ~60kg i usually get excellent mileage out of my tires. I ride around 7000km/Year on my training bike, and usually i throw the Conti GP's i use on it away after a year. And that cause the sidewalls get dry, with plenty of rubber still on them. Typically one can still see some of the profile, even on the rear tire.
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