UPDATE: 3 years later still good. The wings are a bit cracked but still hold up. Even if the dampers fail, the channels are deep enough, I'll probably just keep using them. hooked up near my house so I can get in and out of the garage. The canals are fairly wide and deep, and they appear to be quite strong. Better hang out everything for a mile. Didn't really notice the smell others have mentioned, but mine is outside. They just smell just like the tire shop when you first take them out of the box.