People are afraid of them because they are retreads. They are araid of blowouts or whatever. The tests and technology these tires are subjected to makes them far safer than in the past. They dont recommend air down because it stresses the sidewall. (Voids warranty too) the sidewall stress is applied to any tire that is aired down though. I air my tires down just a few pounds, just enough to get the street pressure out for that tiny bit extra traction. Treadwright does have their new design out that is a wall to wall retread. I have taken mine on rocks, deeep sand, long highway drives, pretty much everything except mud. I hate mud. If you have more questions I would be more than happy to answer them.(dont want to thread hack, but I feel this conversation is welcomed here) I love these tires man. When they stop making them, I will stop buying them. Not until that day comes though.