Tire pressures

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.

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.

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.

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.

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.

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.

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.

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!

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.

enblethen wrote:
First thing I would question is running max tire pressure on MH.
I would weigh the rig, get the tire inflation chart from tire manufacturer, inflate to around five pounds more than shown on chart.
I would lay odds that pressure would be lower than max pressure on sidewall.
I would not adjust tire pressure once proper inflation is achieved.

This is the best advice.