Try this one on for size. I had two new tires installed on the pickup prior to taking it up to the cottage for a week of labour. Wanted the pickup to carry some plywood for a floor repair. The hill up from our place isn't delivery truck friendly, and I'm the poor shit that's gotta fix it when a truck bogs. Well, i wake up the next morning to head up (I'm not the sort to drive any distance in a vehicle immediately after a repair .. even if it is just tires) I've got a flat. Shit happens, right? Take it back, to have it checked. The manager stops everything to take care of it. Pulls the senior guy off what he's doing to tank the tire. After 15 minutes ..... zip. Not even a single bubble. Maybe it was just a grain in the valvestem. It happens. They swap out the stem just to be on the safe side. Good to go, right? Well, as I said before ... I don't take a vehicle that's jsut been repaired. So I forgo the ply and take the Mirage. Get most of the work done. All week, the tire stays inflated. The morning I go to take the truck out .... on the rim flat. Maybe kids, you say? Nope. I parked it so that that tire was right against the fence. The only way to get to the valve was to move the truck forward several feet. Needless to say, I took the hint ... and the mirage.