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grizz272

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Posted: 07/03/21 01:21pm Link  |  Quote  |  Print  |  Notify Moderator

When I had the trailer tires replaced I had metal valve stems put on and then added 507 TPMS . I noticed on Thursday coming home the tires on the west side of the trailer were running 10 degrees hotter and 2 lbs. higher pressure.
Is this normal that the sun side runs a little hotter?

Something happened on the way home that was really strange. I have been towing campers since 1996 and have never had this experience. It was kind of weird and a little spooky,
WE pulled in to a rest area on I43 and the truck/trailer side of the rest area was completely empty. I think there were 30 slots there and we were the only thing in the rest area for at least 1/2 hr.

QCMan

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Posted: 07/03/21 02:09pm Link  |  Quote  |  Print  |  Notify Moderator

You made a good choice with the 507 setup. You will see sun and shade side differences and it is normal. You can see a bigger difference depending on road surface. Sun on the tires and asphalt pavement will give the biggest changes. Sun directly overhead will equalize them. With the trailer in the back of the property I could tell where the sun is just by tire temperatures. Until someone comes out with White UV resistant tires we will have to deal with Black heat absorbing tires. The up side is that they are built to deal with the heat and pressure changes.
We have experienced empty truck side lots in rest stops. Mostly mid morning and mid afternoon times when the big guys are trying to get in maximum tire rotations. Yes, strange but not all that unusual.


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Posted: 07/03/21 06:52pm Link  |  Quote  |  Print  |  Notify Moderator

on the side of my trailer that the exhaust comes out my truck ...the temp and pressures will run higher.


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Posted: 07/03/21 07:38pm Link  |  Quote  |  Print  |  Notify Moderator

The tires on the sunny side of my RV are always hotter and higher psi then the shade side.


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Posted: 07/04/21 07:42am Link  |  Quote  |  Print  |  Notify Moderator

Yep, the side in the sun is always a bit warmer and a couple of PSI higher in pressure. No need to worry on this little change.

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Ron3rd

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Posted: 07/06/21 04:29pm Link  |  Quote  |  Print  |  Notify Moderator

grizz272 wrote:

When I had the trailer tires replaced I had metal valve stems put on and then added 507 TPMS . I noticed on Thursday coming home the tires on the west side of the trailer were running 10 degrees hotter and 2 lbs. higher pressure.
Is this normal that the sun side runs a little hotter?

Something happened on the way home that was really strange. I have been towing campers since 1996 and have never had this experience. It was kind of weird and a little spooky,
WE pulled in to a rest area on I43 and the truck/trailer side of the rest area was completely empty. I think there were 30 slots there and we were the only thing in the rest area for at least 1/2 hr.


Perfectly normal. TST owner for over 10 years BTW


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Posted: 07/09/21 09:15am Link  |  Quote  |  Print  |  Notify Moderator

Yes

sun side is hotter


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dryfly

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Posted: 07/10/21 07:32am Link  |  Quote  |  Print  |  Notify Moderator

I have a new 507 system and noticed one of the sensors reads about 3 psi lower than the others. Is this common?

cummins2014

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Posted: 07/10/21 08:53am Link  |  Quote  |  Print  |  Notify Moderator

dryfly wrote:

I have a new 507 system and noticed one of the sensors reads about 3 psi lower than the others. Is this common?


No, but have you physically checked the air pressure with an air gauge to see what it is. It just may be 3 psi lower then the rest . You need to check all four to see if they all match ,to verify if it's the sensor or just air pressure difference, if you haven't already .

dryfly

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Posted: 07/10/21 09:24am Link  |  Quote  |  Print  |  Notify Moderator

cummins2014 wrote:

dryfly wrote:

I have a new 507 system and noticed one of the sensors reads about 3 psi lower than the others. Is this common?


No, but have you physically checked the air pressure with an air gauge to see what it is. It just may be 3 psi lower then the rest . You need to check all four to see if they all match ,to verify if it's the sensor or just air pressure difference, if you haven't already .


Certainly, that was the first thing I did! All four tires were inflated to 80 psi and checked with same digital gauge. The variation in inflation pressure continues as psi increases with road travel.

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