Tire pressure monitoring systems

Here is a link to a older thread about tire pressure monitoring systems which may be of interest to the OP. It's almost a clone of this current thread.

Tire Pressure Monitoring Systems (old thread)

dsurette wrote:
I had my TST 507 system alert me with an overtemp on my front wheels when braking too much coming down the mountains out west.
I also enjoy not having to check tire pressures in the AM before driving. I would not be without my TPMS.

I had my TST system in about 2008. It was the type that you had to take off to put air in the tires and the batteries were not replaceable. I'm sure everything has been updated and improved since then.

I thought I would enjoy just checking my tire pressure in the morning from the monitor but I would always find that two or more tires were low because of the sensors. Yes, the company stood behind the product but it sure kept me busy and that made it NOT fun.

Several of my cars have the built-in tire pressure monitors which are the best compared to the add-on's. Again, I had the early model and hopefully all the bugs are worked out.

MM.

I had my TST 507 system alert me with an overtemp on my front wheels when braking too much coming down the mountains out west.
I also enjoy not having to check tire pressures in the AM before driving. I would not be without my TPMS.

lanerd wrote:

Effy wrote:

lanerd wrote:

Effy wrote:
How exactly do the external screw on sensors measure accurate tire temperature? Seems spinning on a cap outside the tire in the ambient air couldn't provide an accurate tire temperature could it?

You are missing the whole point of having a TPMS. You measure accurate tire pressure with an external gauge prior to the tires heating up. The TPMS is just to alert you of a tire malfunction caused by low/high pressure or temperature. Knowing accurate tire pressure going down the road is redundant as it changes with speed, altitude, temperature, road conditions....ect.

Ron

I am not missing the point, I am just asking a question. I get how they work and why, I was simply questioning that if a unit measures temperature, how does it do that accurately while being on the valve stem, spinning in the ambient air?

By your own words you keep asking about "ACCURACY and we keep telling you it's NOT about accuracy. The sensor is there only to inform you of a deviation and alert you to its existence.

If you "know how they work and why", then you should understand that the sensor is attached directly to the valve core with the Schrader Valve depressed allowing the air/temp from inside the tire to come into contact with the sensor "inside" the sensor device. Ambient temps "outside" the device does not come into contact with the sensor "inside"...

You will experience "normal" deviation due to the existence of items I previously mentioned. It's only when the deviation "exceeds" the set values (either by you or the factory settings) will the monitor alert you of a problem.

Hope this helps to alleviate your concerns.

Have a great day.

Ron

Again I know how it works and that is a ridiculous argument. If it's not accurate temp then it's not accurate. So $300 for a tool that "might" alert you to a problem based on temp. Obviously it's real benefit is psi. I am no engineer but I am no idiot either. If you think ambient temps don't affect a 1" cube spinning in the air then perhaps you need to stick your finger in ice water and tell me how long it takes for you to feel it inside your tissue. Save it, I'm done with this stupid argument.

I ordered the system, I liked what I read but don't BS me with things like it's not about accuracy. That's the worst arguement I've read to defend a device yet. Perhaps steering wheels work on telepathy?

Effy wrote:

lanerd wrote:

Effy wrote:
How exactly do the external screw on sensors measure accurate tire temperature? Seems spinning on a cap outside the tire in the ambient air couldn't provide an accurate tire temperature could it?

You are missing the whole point of having a TPMS. You measure accurate tire pressure with an external gauge prior to the tires heating up. The TPMS is just to alert you of a tire malfunction caused by low/high pressure or temperature. Knowing accurate tire pressure going down the road is redundant as it changes with speed, altitude, temperature, road conditions....ect.

Ron

I am not missing the point, I am just asking a question. I get how they work and why, I was simply questioning that if a unit measures temperature, how does it do that accurately while being on the valve stem, spinning in the ambient air?

By your own words you keep asking about "ACCURACY and we keep telling you it's NOT about accuracy. The sensor is there only to inform you of a deviation and alert you to its existence.

If you "know how they work and why", then you should understand that the sensor is attached directly to the valve core with the Schrader Valve depressed allowing the air/temp from inside the tire to come into contact with the sensor "inside" the sensor device. Ambient temps "outside" the device does not come into contact with the sensor "inside"...

You will experience "normal" deviation due to the existence of items I previously mentioned. It's only when the deviation "exceeds" the set values (either by you or the factory settings) will the monitor alert you of a problem.

Hope this helps to alleviate your concerns.

Have a great day.

Ron

FWIW, on the TST 507 sensors (maybe the Model 510 too, but I don't know) you can also remove the outer cover and do away with the locking cap thing. This results in a smaller sensor which is easy to remove.

Lou
05 Travel Supreme Envoy

Effy
I know what you are saying but the eezrvproduct you can remove the cover and do away with that locking system and the system gets smaller. He shows how to do it in the YouTube. Sometime smaller is better. I can't get my hand between the rear tires and I don't want to add more junk to the valve stems. I have about a week to make up my mind, and I'm not into the flow through because if I need to add air to my tires I have a problem.
JR

JR45 wrote:
I have done a lot of looking and am down to 2 different systems.:h
The first one that I am thinking about and may get is this one plus I would remove the locking caps on the rear outside to get them on the valve stems
YouTube
http://eezrvproducts.com/
and
http://eezrvproduct.com/TIRE-PRESSURE-AND-TEMPERATURE-MONITORING-SYSTEMS-TPMS-10-EEZ-RV-TPMS10.htm
and second place
http://www.amazon.com/gp/product/B00DGO6LK0
Both systems have Replaceable Batteries
I am not interested in the Flow-Through Cap Sensors
When I had my Alpenlite 5er I used Pressure Pro for over 6 years and the batteries still worked. Sold the system with the 5er, it is a great system but spendy.
JR

one thing that was key for me was the flow through. All these systems have lock on caps so if you had to air up it requires the tool to remove them unless they have the flow through. Then you have to wonder if it sealed back up properly since it depresses the pin on the valve. Just another thing to consider.

I looked at the tire safegard too but what bothered me is that there are no reviews. not that it's bad per se, but I would have liked to read something on it. I just felt better with the TST becuase it's the only one I could find that actually had a lot of reviews.

I have done a lot of looking and am down to 2 different systems.:h
The first one that I am thinking about and may get is this one plus I would remove the locking caps on the rear outside to get them on the valve stems
YouTube
http://eezrvproducts.com/
and
http://eezrvproduct.com/TIRE-PRESSURE-AND-TEMPERATURE-MONITORING-SYSTEMS-TPMS-10-EEZ-RV-TPMS10.htm
and second place
http://www.amazon.com/gp/product/B00DGO6LK0
Both systems have Replaceable Batteries
I am not interested in the Flow-Through Cap Sensors
When I had my Alpenlite 5er I used Pressure Pro for over 6 years and the batteries still worked. Sold the system with the 5er, it is a great system but spendy.
JR

All things considered I called TST and asked them a slough of questions all of which were answered with what sounded like genuine concern for me, the customer. Now I am a hard sale, and I like my money to stay in my pocket, but most of the reviews (when you can find them) on any TPMS refer to TST. Most of said reviews, while they may have had a problem here and there, stated without fail that TST stood by their product and made every effort to fix or replace immediately. Even as far as to overnight parts to a CG. Well, that's enough for me. I will pay a bit extra for something who's company so evidently stands behind their product. The 6 piece 507 flow through system should arrive a my house Tuesday. I got 10% off too.