Faulty valve stem extensions cause flat tire

Yup, I have sold a lot of tires due them or even the equalizers that folks love to love. lol

 

happened twice. Ones crossfire let air out .

 

I thought it was just me. I take a squirt bottle of soapy water now and check for leaking anytime I disturb them.

 

The extensions also need a support pressed into the out wheel hole to support it, or the force from spinning cracks the original valve stem.

 

What is the purpose of them?

 

So you can check air pressure with a gauge without having to remove a cap.

 

i think it has to do with the metals the stems are made of and the extensions are made of. sometimes the extensions "weld" themselves to the stems. many times they get caked on dirt, and this can force them to push in the release pin just enought for a tiny leak, and in time, you have a flat tire.

(do not forget too, that many times, many "accessory parts are made in China or some other country where they just do not use the same metals as the USA or are of course, sub-standard quality...you get what you pay for)

we actually had the cheap plastic caps like on many cars, theis avoided such a problem

now too, many cars these days have tire pressure monitor systems...

it is recommended to NOT put on any extensions other than factory as the problem i mentioned DOES happen more often on our cars.

 

Anymore a lot of stuff made in the US is substandard. Or some jackoff puts the wrong part in the box.