Metal valve stems TST tire pressure

Ron3rd wrote:

93Cobra2771 wrote:
To avoid rubbing, take some vacuum line or fuel line. Split it and put over the valve stem. Keeps the stem from flexing while going down the road. Has worked great for over 2000 miles.

Metal stems wouldn't work on mine due to the diameter of the nut for the stems. They didn't machine the relief big enough on the rims.

I got metal core stems, but pull in place like a standard valve stem. They don't bolt in place.

I've seen that mod done and it seems to work. Stopping the flex is the key; my sensors would actually leave marks on the wheels with the rubber stems from the back and forth motion. Some folks get away with the rubber stems for a long time, some don't.

I'm reasonably sure I was the one who posted the mod up, with pics. Have around 3000 miles/two years on them so far with no issues.

Lynnmor wrote:

93Cobra2771 wrote:

Metal stems wouldn't work on mine due to the diameter of the nut for the stems. They didn't machine the relief big enough on the rims.

Did you look at the stems with the nuts on the inside? Stems

At the time, I didn't know there was such an animal. It was a small local tire shop and they didn't have anything like that either.

93Cobra2771 wrote:
To avoid rubbing, take some vacuum line or fuel line. Split it and put over the valve stem. Keeps the stem from flexing while going down the road. Has worked great for over 2000 miles.

Metal stems wouldn't work on mine due to the diameter of the nut for the stems. They didn't machine the relief big enough on the rims.

I got metal core stems, but pull in place like a standard valve stem. They don't bolt in place.

I've seen that mod done and it seems to work. Stopping the flex is the key; my sensors would actually leave marks on the wheels with the rubber stems from the back and forth motion. Some folks get away with the rubber stems for a long time, some don't.

allen8106 wrote:

bob213 wrote:
On my TST system they are not required but highly recommended.

I have the TST system and have run rubber valve stems for two years and over 3000 miles with no problems.

I did the same thing at first, but keep and eye on the rubber stems. The constant flexing caused by the weight of the sensors eventually cracked 2 of my rubber valve stems so I switched to metal stems. IMO the flex will eventually crack rubber stems.

93Cobra2771 wrote:

Metal stems wouldn't work on mine due to the diameter of the nut for the stems. They didn't machine the relief big enough on the rims.

Did you look at the stems with the nuts on the inside? Stems

Don't ask why, it's a long story but I have 3 rubber stems and one metal stem. The only one that leaks is the metal stem.

To avoid rubbing, take some vacuum line or fuel line. Split it and put over the valve stem. Keeps the stem from flexing while going down the road. Has worked great for over 2000 miles.

Metal stems wouldn't work on mine due to the diameter of the nut for the stems. They didn't machine the relief big enough on the rims.

I got metal core stems, but pull in place like a standard valve stem. They don't bolt in place.

I had the hybrid metal valve stems on my Chevy 2500. They worked well for about 20,000 miles then the rubber on the stem failed. Put on the spare got home but overnight another stem failed. Thus had to pull wheels and take to a tire dealer with my Subaru Outback.

Thus a single spare tire was of no use to me.

Go all metal if you do not want to have problems down the road.

Thanks for replies. That's what I need to know.

I require them on my vehicles with stem mount TPMS.