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Old 03-25-2013, 09:52 AM   #29
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Still looking for info on acceptable tire temps using an IR device And where to best measure , on sidewall or tread?

What is acceptable difference between inner and outer duals?
Ha, Ive got a rectal thermometer, can I use that? Where do I put it. Man this RVing is hard!
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Old 03-25-2013, 10:02 AM   #30
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Ha, Ive got a rectal thermometer, can I use that? Where do I put it. Man this RVing is hard!
Just make sure it is the model that has been individually tested at the factory. It will state it on the package.

What a job!

I check my tires with a truckers dual head tire gauge, don't remember the name, before departure on every trip. So if it has sat for a month, before departure I check the pressures. If I stop for the night, the next day before departure I check the tire pressures. So far, so good, and yes I have had to inflate some and deflate some from time to time, depending on temperatures and altitude changes, but not often as I use the fudge factor when inflating. (See previous posts in other tire forum threads)
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Old 03-25-2013, 11:04 AM   #31
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I have had to inflate some and deflate some from time to time, depending on temperatures and altitude changes
Very timely post Wayne - that should keep this thread running for a long time yet.
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Old 03-25-2013, 11:11 AM   #32
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Ha, Ive got a rectal thermometer, can I use that? Where do I put it. Man this RVing is hard!
Was it Fonzie who said "Sit on it."
Ok back to topic.
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Old 03-25-2013, 11:38 AM   #33
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I inflate my truck tires front to #50 cold back to #80 cold, after I drive a few miles the pressure goes up #5.
So should inflate my trailer tires to #80 cold knowing
they will in cress in pressure,or should I just put #75 cold ?
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Old 03-25-2013, 03:18 PM   #34
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Other than in very special circumstances, such as if you are checking the tyres in a garage heated to 75F and then driving outside in -30F all day, all pressures referred to on vehicle placards and tyre load tables and on tyre side walls are COLD (meaning ambient) temperatures.
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Old 03-25-2013, 03:55 PM   #35
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For the IR gun what is considered normal range? Is there an adjust factor for air or road temperature?

I have been surprised when running with one side constantly face south ( sun side) how much hotter the tires are on that side. What is considered normal difference for those of us living in the south?

What is considered a normal difference between inner and outer duals inflated to the same cold pressure?
60 degrees F above ambient using the IR gun method.

Bridgestone Commercial Truck Tires

Normal temperature is addressed in 2 of the questions posed to the Tire Doctor towards the bottom of the questions.

I see about a 5 degree delta between the sunny side and the shady side running down the road.

Very little difference between inner and outer duals (3 degrees F maybe).

To the OP, you need to be able to check and adjust your cold tire pressure without taking it to a shop. I use a Milton truck chuck guage and a Milton air chuck on my portable Sears 150 PSI compressor. Tops off my 275/70/22.5's with no trouble.

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Old 03-25-2013, 06:05 PM   #36
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Thanks, great info.

I live 2 miles from the Bridgestone truck tire plant. Someday I plan to get a Tour.
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Old 03-25-2013, 09:07 PM   #37
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1-2 psi for every 10F in temp. I use 2. 1 psi differential for very 1000' altitude. It is also very important to equalize the pressure between tires in a set of duals, that is, make sure they are the same. The diameter difference will work the tread.
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Old 03-26-2013, 06:53 PM   #38
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Hey Chaffekid ..post # 5 .. Thats way I did it too ,that is with a tire billy. Now the motor home doesn't make it easy to 'thump' tires so I installed Cross Fires . Now a visual check is fine and just to satisfy my curiosity from time to time I get out the IR gun..
IIRC tires on MoHo are at 115
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Old 03-27-2013, 01:41 PM   #39
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WOW, Sorry I did not know I would start a war of words! Geeze just wanted an answer.

Sorry for starting this thread.....it should die now.

Alan
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Old 03-27-2013, 05:36 PM   #40
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Alan, I guess everyone lost sight of your first post .. So I might think the take away
would be .... It's important to check air pressure ...
How you do it or who does it and where is a matter of personal choice.
Safe travels on your journey
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Old 03-27-2013, 06:13 PM   #41
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In MI, many trucks run 42 tires in all sorts of combinations.

I have seen safety recommendations calling for airing up your truck tires with a 10 foot hose extension so if the tire blows as you are taking it from 80 to 100 psi, it doesn't take you with it. One end clamps on the tire schrader valve before you start adding air.
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Old 05-24-2013, 09:56 AM   #42
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PCL Truck Tire Inflator 0 - 174 PSI w/ 15' Hose and Clip-On Air Chuck (OSHA Compliant) (PCL-ALG4A093: All Tire Supply Company

Just bought this truck tire inflater unit with a 15 foot hose (OSHA approved) to check and fill my class A tires. Made by PCL in England. Probably the best on the market. Make sure you get the OSHA unit so you can stand back from the tires while you check and inflate them. Very good unit
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