Ok, I'll say this one more time. I've been using Crosman SoftAir 'pellets' (6mm) for years now. They're cheap, and they work. I've used them in the ST1100, the motorhome and the cars. When I've changed tires, they're still as they were when I put them in the tires. They don't disintegrate, they stay round, they don't absorb moisture, they can be used again. They don't need filtered valve cores. You put them in when you mount a tire, and forget about them. 4oz in a car tire, 2oz in a bike tire. I just can't figure out why everyone wants to make a simple solution so difficult. JWID, YMMV, HTH!
John
John