I have an almost new (400 mile) Michelin Erilium bicycle tire in which the wire bead separated from the side of the tire. The tire was pressurized to 112 pounds. What woulod cause this failure?

RickJ

If that pressure is within the tire's recommended range, I'd call it just a bad tire.

Call where you got it to confirm you can come trade it in. If they're reputable they'll do it on the spot instead of having you contact Michelin directly.

fredg

Hi,
As another said, probably a bad tire.
Most tire manufacturers' have good Quality Control in producing their tires, but sometimes, a bad one gets to the dealers.
If your tire is still under warranty, you might be able to get a new one.
Same thing sometimes happens to new tire for autos. Treads separate due to bad construction. And, sometimes a very hard blow to the tire can separate it.
Best of luck.