9elf S

I stripped the threads on my valve stem while filling a tire using the Porcshe compressor. The tire holds air (there was no damage to the actual valve stem), and I can still fill it using a gas station, push type compressor. But I'm **** and hate that my Porsche crest valve stem cover (or any vavle stem cover) won't stay on because of the stripped threads. Short of replacing the valve stem, which I would prefer not to do, anyone have any ideas? Is there a tool that can re-thread the valve stem? The tire has 2,200 miles on it, so it may be a while before I have to change it.

Thanks.

mdrums

I'd just replace the valve stem. They are cheap and your local nice tire place can have it done in minutes.

9elf S

Do they have to remove the tire to replace the valve stem? I try to minimize people working on my car to avoid or limit damage.

p-cardriver

If the car has tire pressure monitoring, the stem is part of or integral to the sensor and is probably both more expensive and a bit more difficult to replace. I believe all valve stem replacements require removing the tire. Make sure you use a good tire shop, and (if not TPS) get good stems.

If the tire is worn enough, just wait until you need new tires to deal with it. You might get some cheap plastic caps and just cross thread one on in the meantime.

cviles

Some of the threads on one of my stems got crushed and I had to replace it a few months back. I don't know why, but it seems that Porsche is using a very soft metal for the threads.

Anyway, the valve stem screws into the TPMS sensor, but is a separate part; you don't have to replace the expensive part along with the cheap stem. You do have to dismount the tire to do the replacement though.

OneManTX

I just looked into this because the threaded part of my valve stem got bent while the wheel was at the tire shop getting plugged. It holds air, and I'll just wait 'til I replace the tire. The stem itself is about $18.

mal28

I just had exactly the same problem, Porsche put on a new valve stem under warranty

Edgy01

Let Porsche do it under warranty. If it's part of the TPMS then you don't want to go there,--it will be pricy,--run you about $150.

This is what is on the other side of the tire...

Mussl Kar

Stem and sensor are 2 different items. I bought them for an older set of lobstah fahks that I got and they come in two pieces that need assembly. I'm sure you can buy just the stem. Call epartsales (Suncoast) The tire does need to come off though.

vrnkc

Can you try a little silcone glue on the threads just to hold on to the valve stem cap? You will still be able to unscrew and remove the cap in the future.

Edgy01

That's correct. I had forgotten. Most tire shops today are routinely replacing the stems and the washers on TPMS equipped wheels when they come in for tire replacement. If it bothers you that much I would have them break the bead on the front side of the tire, unscrew the valve, replace it, and then pop the tire back up to pressure. Wouldn't cost more than about $10.

abe

..a little Prozac or Zoloft and it should take care of the problem. Then again, my wife tells me I don't keep my Porsche as clean as the other club guys.
abe

Edgy01

Hey--we already have too many self-medicating!

9elf S

The 997 is my form of therapy.

Thanks for all the responses. The car needs to go in for an oil change to prepare it for the upcoming winter, so I'll see if they will replace under warranty. It's interesting to hear that I'm not the only person experiencing this problem.

mostolf

Well, I also stripped a valve stem this past weekend using the Porsche air compressor. The above info is very helpful.

Unfortunately, the fitting on the end of the compressor hose that screws onto the valve stem is also screwed-up. Does anyone know if I can buy just a new fitting or do I need to buy a whole new compressor?

Thanks.