TPMS w/ Airless Flexible Valve Extenders

Would recommend that you call or e-mail TST (info@tsttruck.com or 770-889-9102). Post back and let us know what you find out.

Forget about getting an accurate temperature measurement with valve extenders. The extenders just put the sensors out in the air flow.

These are the ones I use, six years and counting, with the TST 507 system. They've worked flawlessly...Dennis

Dennis, thanks for your reply. Are they airless (i.e. an internal spring presses on the valve stem when filling the tire with air) or are they also pressurized in use? Who makes them?

Thanks,
Mike

BigMac wrote:
Dennis, thanks for your reply. Are they airless (i.e. an internal spring presses on the valve stem when filling the tire with air) or are they also pressurized in use? Who makes them?

Thanks,
Mike

I think this is what Dennis is using:

AML1 extenders

Fred

fcooper wrote:

BigMac wrote:
Dennis, thanks for your reply. Are they airless (i.e. an internal spring presses on the valve stem when filling the tire with air) or are they also pressurized in use? Who makes them?

Thanks,
Mike

I think this is what Dennis is using:

AML1 extenders

Fred

Yep! Made by Phoenix...Dennis

As follow-up to my question about the merits of the two types of rear wheel valve extenders (airless vs. air-filled) that can be used with a TPMS system, I called a TPMS manufacturer yesterday to see what they might say. While they said that their wireless pressure sensors will work with either, the specific statement regarding airless extenders was

We've worked with these airless extenders before... To be honest, I do not like them. The metal rod that runs through the depressor commonly misses the tires valve stem (after a period of time being depressed) and gets jammed beside the original valve core causing leaks. We can work with them as we would depress the internal rod, and in turn depress the original valve core. You are exactly right though this would render the airless extender moot as it would constantly hold pressure. We usually work around this by offering a different extension (air-filled)...

So I think that on the rear tires I am going to change over to air-filled. They have a robust depressor design that once fully screwed onto the tire's valve stem pressurize the extension and keep it protected via the metal braiding.

If there are other comments out there, I'm interested to hear.

No comment here other than thanks for the follow up regarding what you learned.

Instead of messing with extensions that will eventually leak/fail, you should check into getting proper replacement valve stems This , Borg Tire Supply, is a source I've used. They are expensive and you have to dismount the tires to install, but they are much more reliable than the extensions

JoeH wrote:
Instead of messing with extensions that will eventually leak/fail, you should check into getting proper replacement valve stems This , Borg Tire Supply, is a source I've used. They are expensive and you have to dismount the tires to install, but they are much more reliable than the extensions

Agree