Date registered: Mar 2005
Vehicle: '01-E320 & 02-ST2
Location: John 15:18-19
Mentioned: 0 Post(s)
Quoted: 35 Post(s)
RE: Flat new tires! Help, please.
The beads are the inner most surface areas of the tires and they are the key to the success of tubeless tires. If the wheel mating surface is not clean and smooth, the beads will not fully seal and thus you have leaks. Costco should have a bath they can put the wheel in while the tire is on it, typically if it's a bead problem you'll see lots of little bubbles from all around the wheel.
In any event, their folks seem pretty good, I've bought lots of tires there, so get it back in and let them figure it out.
If you have alloy wheels, let them leak-test them with a tire mounted as well. It is possible for air to leak through the porous holes in the metal when the internal seal breaks down. Rare, but possible.