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Old 09-11-2011, 08:40 PM   #1
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Tire Pressure Increase

This question is aimed at people using a tire pressure monitoring system. How many PSI does your tires increase during a typical days travel?

I have a Pressure Pro System, all new tires and have pressure increases of about 25 PSI. I am wondering if this is "normal?"
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Old 09-11-2011, 08:56 PM   #2
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I have a TTS system and I find my tires increase in pressure about 10 -12 PSI. Toad increase about 3 -4 PSI.

Don
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Old 09-11-2011, 09:50 PM   #3
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Mine runs 12-15 psi, depending on road temperatures. If you are seeing a 25 psi increase, odds are your tires are under-inflated and building up too much heat. Weigh the rig and adjust psi according to the tire manufacturer's load inflation tables.
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Old 09-11-2011, 09:53 PM   #4
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About 15 pounds on the RV and 4 or 5 on the toad.
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Old 09-11-2011, 11:09 PM   #5
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As above, my front will increase 12-15 lbs depending on road temperature. I have gotten 20 - 22 lb increase in my rears. The rears are the XRV-1 singles that I have inflated to max pressure of 120 lbs cold to carry the weight and a little extra safety factor. As Gary suggested, check you weight against the tire manufacture's tables to be sure you're properly inflated.
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Old 09-12-2011, 05:31 AM   #6
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Quote:
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I have a TTS system and I find my tires increase in pressure about 10 -12 PSI. Toad increase about 3 -4 PSI.

Don
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Old 09-12-2011, 03:58 PM   #7
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Thanks for the replies to my question. I checked the Goodyear tire pressure chart and need to increase my tire pressure by 10 psi in all six tires. Tires made after 2006 have a recommended 10 PSI increase over those made prior to 2006.
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Old 09-12-2011, 04:15 PM   #8
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About 10 - 15 lbs. Also depends on temp of the outside air.
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Old 09-12-2011, 05:28 PM   #9
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About 10 - 15 lbs. Also depends on temp of the outside air.
Same here, although I'm more concerned that I have the correct starting TP than how much in goes up during the day. Now, going down is different!
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Old 09-12-2011, 08:10 PM   #10
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I noticed a marked difference from the inner rear tires mounted on the steel rims vs the outer on the aluminum rims. For that reason I decided to add a crossfire system by dual dynamics which allows the pressure to balance itself out between the two.
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Old 09-12-2011, 09:11 PM   #11
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Aluminum rims are stronger,lighter and disperse heat better thats why a lot of trucking companies use them. They don't crack like steel will, not saying they won't but believe it or not they are stronger.
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Old 09-12-2011, 09:27 PM   #12
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Something else you will notice is the tire temps on the sunny side of the rig will run 6 to 8 lbs higher than the tires on the shaded side. I check mine with a good IR temp gun that I feel is accurate.
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Old 09-12-2011, 09:31 PM   #13
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believe it or not they are stronger.
Maybe, maybe not!
I had steel wheels on our DSDP, replaced them with Alcoa's. The front steel wheels were heavy duty (replaced when Spartan replaced the front axle) and the new Alcoa's have the same weight/pressure rating. The rears still had the OEM steel wheels and there the Alcoa's do have a strength advantage.
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Old 09-13-2011, 11:13 AM   #14
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10-15 lbs increase on my TST system
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