Originally Posted by blacklimitedcoupe
I still want to know where that brass end goes when you use the plug. I imagine it just floats around inside the tire...?
I believe it's designed to act as a barb for the plug, because on those other plug kits you buy at Pep Boys, they don't use the brass barb. They are known to get pulled out of the tire during hard acceleration, and thus leaving a big hole for air to escape, very dangerous at any speeds.
I use them all the time but only on the wheels that ARE NOT driving the vehicle!