Tire pressure

layoutshooter

Veteran Expediter
Retired Expediter
I have gone back to running everyday air in my tires vs. nitrogen. I was just having too much trouble finding places that could keep them up and the cost was too high. I bought a decent air compressor so I can get really good cold pressures at the house and I can keep it up on the road easier. NOW, my question, what is a cold pressure? It is 5 outside right now and if I check my tires they will all read low. Yesterday, while my truck was indoors for several hours and the tires where at about 65 they were perfect. If I bring them up today and head south tomorrow the pressure will be way too high at 60-70. I need input from those in here who know more about this than I do, which there are many. How do you handle it? Layoutshooter
 

OntarioVanMan

Retired Expediter
Owner/Operator
I have gone back to running everyday air in my tires vs. nitrogen. I was just having too much trouble finding places that could keep them up and the cost was too high. I bought a decent air compressor so I can get really good cold pressures at the house and I can keep it up on the road easier. NOW, my question, what is a cold pressure? It is 5 outside right now and if I check my tires they will all read low. Yesterday, while my truck was indoors for several hours and the tires where at about 65 they were perfect. If I bring them up today and head south tomorrow the pressure will be way too high at 60-70. I need input from those in here who know more about this than I do, which there are many. How do you handle it? Layoutshooter

I would say it's going to be a little extra diligence on your part Joe...if your looking for perfection...like when you get into warmer clims...to check and adjust where needed...don't you have air on the truck? Can you tap into it with a hose to inflate?
 

layoutshooter

Veteran Expediter
Retired Expediter
I have air but no way to tap into as yet, that is on my to do list. I was just wondering out loud. We change geographical locals so quickly in this business. Layoutshooter
 

piper1

Veteran Expediter
Owner/Operator
Michelin always told me it was better to be over inflated on the trip south than it was to be under inflated and heavy loaded back north.

We ran the fleet at 100 psi (Mainly Michelin fleet) and The mechanics were told to start checking tire pressures within 10 minutes of bring the truck into the shop. Never had any issues.

Too bad the nitrogen didn't work out.


PS we ran our singles at 120psi.
 

layoutshooter

Veteran Expediter
Retired Expediter
I really liked the nitrogen, I did notice that the temp flucuations were much smaller then with normal air and they held pressure much better. At the cost of ten per tire and with so few places having the ability to handle large truck tires it just did not work out. What I need is a self-regulating pressure system, I just can't afford it now. Layoutshooter
 

piper1

Veteran Expediter
Owner/Operator
Do you run Alligator valve caps? It may seem hokey but these things were the best bit of tire program I ever used. Saved a ton of time checking and inflating at service but most importantly they really cut down on air loss. Bout a buck a piece.
 

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moose

Veteran Expediter
Problem with having an external pump , is that the Air do not go through the moister separator ,
then you have moister in the tire , and on the rimes ,and on the valve steam and most important - between the rimes and the tire .
then it become ICE.
and then you have a lost of air ...
and the tire loose his balance ...
you get the Picture ...

on the other hand , the air on the back of the truck...
or at the fuel island ...



Moose.
 

P51bombay

Expert Expediter
Do you run Alligator valve caps? It may seem hokey but these things were the best bit of tire program I ever used. Saved a ton of time checking and inflating at service but most importantly they really cut down on air loss. Bout a buck a piece.


Could you explain how these things work? Seen them but didn't know what they were.
 

Moot

Veteran Expediter
Owner/Operator
Problem with having an external pump , is that the Air do not go through the moister separator ,
Moose.

Tap in on the dry side of the air dryer. I believe the Caffees have an air fitting plumbed on their truck for attaching an air hose to fill tires, blow dirt and inflate water toys.
 

moose

Veteran Expediter
The KW dealer behind the J in KC have those kit on display at the parts counter .
ask for free shipping.




Moose.
 

piper1

Veteran Expediter
Owner/Operator
Could you explain how these things work? Seen them but didn't know what they were.

They are basically a type of "quick connect" air fitting that threads on as a valve cap. You can air up and check pressures through them (don't have to take them off). The savings comes from now having essentially 3 seals on your valve stem, the regular one threaded into the stem (which leaks a lot more than you think), then 2 in the valve cap. They are designed to use the air pressure to help keep them shut so you loose virtually no air ever through the stem. If you ever remembered what the actual valve inside the stem on your bike as a kid, they are pretty much 100% the same thing protecting your 500 dollar Michelin. The sealing mechanisim in these caps uses air and the vibration of the truck to constantly try to keep sealed. Kinda neat tech crammed into a little silver thing for a buck!
 
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