5th Gen TPMS

[danmit37]

I've read several threads on TPMS and programming/learning. Here is my experience, and I am going to dumb this down because that is how I like to find info. Not a lot of tech talk.

I bought new wheels for winter tires and needed new TPMS from amazon (link below). They came 'pre-programmed'. There is a ton of talk about needing Alpha-OBD, does Ram auto-learn, blah blah. I put my new wheels on and drove it. Within 5 miles, the computer read the new TPMS and I was golden. No Aplha-OBD, no programming, no training. My opinion....if a shop is charging you to program or learn you computer, they are ripping you off. I am sure there will be mechanics on here telling me that I am wrong, and I am sure there will be several members on my side. It is what it is. This is my experience. Hope that this info helps someone in the forum.

https://www.amazon.com/dp/B0BRQT1J92?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

 

[Dean2]

I've read several threads on TPMS and programming/learning. Here is my experience, and I am going to dumb this down because that is how I like to find info. Not a lot of tech talk.

I bought new wheels for winter tires and needed new TPMS from amazon (link below). They came 'pre-programmed'. There is a ton of talk about needing Alpha-OBD, does Ram auto-learn, blah blah. I put my new wheels on and drove it. Within 5 miles, the computer read the new TPMS and I was golden. No Aplha-OBD, no programming, no training. My opinion....if a shop is charging you to program or learn you computer, they are ripping you off. I am sure there will be mechanics on here telling me that I am wrong, and I am sure there will be several members on my side. It is what it is. This is my experience. Hope that this info helps someone in the forum.

https://www.amazon.com/dp/B0BRQT1J92?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

You are correct. I have two sets of wheels for my wifes Jeep. It has no trouble learning the new TPMS when they are swapped summer and winter. The only reason you would need Alpha is to adjust the warning thresholds, so for instance, my 2500 shows 65 PSI on the door sticker, I run 45 PSI in my E rated tires. That is plenty of pressure according the the inflation chart for my tires, and it rides a whole lot better at 45. At 45 PSI the low tire warning is on all the time. I used Alpha to drop the warning light so it doesn't come on till the tires get down to 35 PSI.

https://tirepressure.com/lt275-70r18-tire-pressure

 

[Sherman Bird]

I've read several threads on TPMS and programming/learning. Here is my experience, and I am going to dumb this down because that is how I like to find info. Not a lot of tech talk.

I bought new wheels for winter tires and needed new TPMS from amazon (link below). They came 'pre-programmed'. There is a ton of talk about needing Alpha-OBD, does Ram auto-learn, blah blah. I put my new wheels on and drove it. Within 5 miles, the computer read the new TPMS and I was golden. No Aplha-OBD, no programming, no training. My opinion....if a shop is charging you to program or learn you computer, they are ripping you off. I am sure there will be mechanics on here telling me that I am wrong, and I am sure there will be several members on my side. It is what it is. This is my experience. Hope that this info helps someone in the forum.

https://www.amazon.com/dp/B0BRQT1J92?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

What's all this talk about tire pressure monitoring systems, anyway? Whatever happened to the Macho man kicking his tires, grunting like Tim, the Tool Man, Taylor, and getting into his truck and driving off?? LOL

 

[Bigskyroadglide]

More government intervention in our life's as they think we are not self sufficient enough to check tire inflation so a 1/10 of an ounce of gas can be saved. Huge waste of resources

 

[Sherman Bird]

More government intervention in our life's as they think we are not self sufficient enough to check tire inflation so a 1/10 of an ounce of gas can be saved. Huge waste of resources

I've noticed a pretty significant change in air pressure with outside ambient changes. I understand WHY some folks use nitrogen in their tires, but I won't spend the money.

 

[Dean2]

I've noticed a pretty significant change in air pressure with outside ambient changes. I understand WHY some folks use nitrogen in their tires, but I won't spend the money.

Had nitrogen in a couple of vehicles as Costco uses that when they mount new tires. It was free so I didn't care. Paying t10 to 20 bucks a tire is a scam.

It was only slightly less affected by temperature changes. Air is 78% nitrogen and 21% oxygen. Removing the oxygen does not significantly change the thermodynamic coefficient when put into a tire.


What are the effects of temperature change on my nitrogen filled tires?

The pressure in nitrogen filled tires will change when the temperature changes, just as it does with air filled tires, because nitrogen and oxygen respond to changes in ambient temperature in a similar manner. For example, when your vehicle is parked it will lose a similar amount of pressure for every 10 degree change in temperature, whether the tires are filled with nitrogen or air.
The calculations for this change are based on the Ideal Gas Law. A good rule of thumb is this: For every 10 F degree change in temperature, the pressure will change by 1.9%. If a tire is filled to 32 psi at a temperature of 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 31.4 psi; a difference of .6 psi. If a 100 psi tire is filled at 75 F degrees and the temperature drops 10 degrees, the tire pressure will drop to 98.1 psi; a difference of .9 psi.
These fluctuations will occur as the temperature rises and falls no matter what the inflation gas. Fortunately, tire manufacturers are well aware of these conditions and design their tires and recommend their cold inflation pressure accordingly.
However, nitrogen does not contain the moisture and other contaminants found in compressed air so, as you drive and the tires heat up, nitrogen filled tires will fluctuate less in temperature and pressure than air filled tires while driving. The bottom line is, you will still see pressure changes with nitrogen but, overall, your tires will run cooler and at a more consistent pressure than if they were filled with air.
For more information please see the Effects of Temperature on Pressure which shows the expansion rates of dry air or nitrogen, in both a truck and passenger tire, as the temperature increases. It also shows how the vapor pressure of water increases as temperature increases and includes a brief explanation.

 

[turkeybird56]

I've noticed a pretty significant change in air pressure with outside ambient changes. I understand WHY some folks use nitrogen in their tires, but I won't spend the money.

As U know the temps in TX were going down into the 50's in the AM, which caused me to go and add 2-3 lbs per tire to mine to get them to 37 psi for my Falkens. BUT of course, here comes another gonna get hot and into the 90's again, hee hee.

 

[turkeybird56]

What's all this talk about tire pressure monitoring systems, anyway? Whatever happened to the Macho man kicking his tires, grunting like Tim, the Tool Man, Taylor, and getting into his truck and driving off?? LOL

GOTTA have yer "Thumper" !!!

 

[Bigskyroadglide]

Yup, getting cold here in Montana tires have dropped 3 to 5 PSI, so Time to add air as they could drop below the Tpms threshold and cut the nanny light on.

Nitrogen is not helpful in controlling the pressure drop.

It easier to just check tires weekly. Better tire life anyway.

If I could op out of all the electronics I would. Ive opted out of Hud, Lane departure warnings, automatic braking, Adaptive cruise control, etc.

I just do not want Or need these items.

Just give me a radio and a big V8 producing 5 to 700 HP and I'm a happy camper.

 

[Sherman Bird]

GOTTA have yer "Thumper" !!!

View attachment 553412

....and here all this time, I thought "Thumper" was a rabbit from a Disney Movie!

 

[Tulecreeper]

As to tire pressure - pick a mild morning when the temp is in the 70's (F) and set the PSI to whatever it is you want it to read, then stop worrying about it all the time. It's going to go up when you're driving , especially when the pavement is hot, and go back down again when they cool off. As long as they don't go below what you want them to be by more than a couple PSI, leave them alone. This constant adding and releasing air because the PSI went several degrees above the set point is ridiculous and just wastes your time.