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 > Tire pressures

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Reisender

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Posted: 07/10/22 07:38am Link  |  Quote  |  Print  |  Notify Moderator

Weigh the coach’s axles.

Select the proper pressure from the tire manufacturers charts for that weight

Set the pressures first thing in the morning on a cool day.

Check periodically (in the morning) to insure they are correct.


Do not adjust for temp.

RB414921

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Posted: 07/10/22 07:57am Link  |  Quote  |  Print  |  Notify Moderator

Maybe I just need to reword what I’m saying I’m saying on a long trip I’ve got a tire pressure monitoring system and when I see the pressure getting up to 110 psi do you guys continue letting it to rise or do you readjust it back down to the starting point and continue on with your trip. I was just concerned that reaching 110 psi which is the maximum PSI when you’re driving and it gets above 110 is that a good thing or a bad thing.


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Posted: 07/10/22 08:15am Link  |  Quote  |  Print  |  Notify Moderator

Your tire manufacturer doesn’t recommend lowering the tire pressure, does he/she? Tire pressure is set with cold tires. Almost all weather conditions will cause a working tire to increase its pressure.


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MountainAir05

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Posted: 07/10/22 08:29am Link  |  Quote  |  Print  |  Notify Moderator

RB414921 wrote:

Maybe I just need to reword what I’m saying I’m saying on a long trip I’ve got a tire pressure monitoring system and when I see the pressure getting up to 110 psi do you guys continue letting it to rise or do you readjust it back down to the starting point and continue on with your trip. I was just concerned that reaching 110 psi which is the maximum PSI when you’re driving and it gets above 110 is that a good thing or a bad thing.



Simple. Adjust the air pressure only when the tire is cold. Have the tire checked if you think it getting too hot. The tire can be out of balance and that will cause it to rise in pressure, along with other things.

Bruce Brown

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Posted: 07/10/22 08:35am Link  |  Quote  |  Print  |  Notify Moderator

RB414921 wrote:

Maybe I just need to reword what I’m saying I’m saying on a long trip I’ve got a tire pressure monitoring system and when I see the pressure getting up to 110 psi do you guys continue letting it to rise or do you readjust it back down to the starting point and continue on with your trip. I was just concerned that reaching 110 psi which is the maximum PSI when you’re driving and it gets above 110 is that a good thing or a bad thing.


That 110 psi is the cold max. The engineers have a safety factor built in.

That said, the best advice has been to weigh the MH and adjust according to the tire weight chart.

One more thing, if heat caused the rise cooling will also lower it. If you started at 90 psi and it gets to 110 while driving it won't stay there forever. If you're seeing that you might want to check your pressure senders. No one added any air while you were driving so eventually the original pressure will return.


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wolfe10

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Posted: 07/10/22 08:36am Link  |  Quote  |  Print  |  Notify Moderator

RB414921 wrote:

Maybe I just need to reword what I’m saying I’m saying on a long trip I’ve got a tire pressure monitoring system and when I see the pressure getting up to 110 psi do you guys continue letting it to rise or do you readjust it back down to the starting point and continue on with your trip. I was just concerned that reaching 110 psi which is the maximum PSI when you’re driving and it gets above 110 is that a good thing or a bad thing.


As ALL have stated, do NOT adjust pressure downward because it rises due to driving, sitting in the sun, etc!

PERIOD.


Brett Wolfe
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jorbill2or

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Posted: 07/10/22 09:01am Link  |  Quote  |  Print  |  Notify Moderator

TPMS systems allow you to see real time pressures causing paranoia. Your tires have always gained pressure as you drove and you heated them up. Entirely normal. Mine have gone up 20 psi or more on the gauge. Unless you see a single tire increasing dramatically due to under inflation , friction heat from a mis adjusted brake or bearing failure , leave it alone . End of story.


Bill

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Posted: 07/10/22 09:14am Link  |  Quote  |  Print  |  Notify Moderator

As Bruce and a few others have stated, 110 is the max cold tire pressure. The engineers that design tires take into account the pressure increases as the tire heats up.

You do not need to bleed air out of the tires unless it is over the cold max when cold. Think cold as the rig has sat all night and you are checking first thin in the morning.

In the morning if there is a hot sun on a tire and it reads 112 and the shaded tires read 110 it's okay to leave it that way.


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Ed_Gee

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Posted: 07/10/22 09:27am Link  |  Quote  |  Print  |  Notify Moderator

To make it clear to the OP - tire pressure can easily and safely exceed maximum tire pressure ratings while driving. This is normal. Do not fret over it nor readjust!


Ed - on the Central Oregon coast
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RB414921

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Posted: 07/10/22 10:41am Link  |  Quote  |  Print  |  Notify Moderator

Thanks everyone I truly appreciate all the feedback I got on this one and it makes me understand a little better about tire pressures and what not to do.

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