This is an annoying problem. We all know that if you leave your tires full of air for 3 months they lose air. And after a week they should get pumped up. But the rate of air-loss has been increasing, down to nearly-flat per four days. But they seem fine for a normal ride.
Does everybody go through this? It's both wheels -- and I'm not sure if I'm at a higher risk for flatting during a ride or if there's something with the wheels or the way I've replaced the tubes (but the tubes are a couple of low-mileage months old, and this is a very recent phenomenon.)
Anybody else deal with this? If so, what's your air-loss replacement threshold?