it does seem too good to be true, but technology advances everyday, so I'm trying to decide if I want to take a chance. on airfreetires.com they have the legacy daytona "high performance" tire in 700x20 listed at 370g, which dosent seem too terrible when compared to a traditional tire and tube(+air) of the same size. I'm thinking of trying it, since thay have two tires plus install tool for about $70, along with a 30 day unconditional warranty. But on the other hand, theres got to be a reason everyone isnt using these things.

That guy in the videos talked WAY too much, and dosen't seem to be able to edit to save his life.