flat tires.

Originally Posted by Mick

Just for your information - I was told by the shop I use that the old style plugs are no longer legal. Tires must be plugged from inside the tire by a plug with a flap. How long this has been, I don't know. This was the first flat tire I've had in over 25 years.

It's called vulcanizing, some kind of patch and heat. Like an iron or something done from the inside of the tire.