Tire pressure..

edbehnke wrote:
90-110 I got a lot of different pressures from the experts. go figure.

Charts are there for a reason, use them!

Definition:
Ex; something unknown
Pert; a drip under pressure
Expert; an unknown drip under pressure.

90-110 I got a lot of different pressures from the experts. go figure.

Thanks for the responses... The original wheels, 16" 8 lug are rated for 110psi (per stamping on inside spoke), I do have 7000lb axles

NHIrish wrote:
The Goodyear website goes through a long explanation on weighing and tire psi...then states that FOR TRAILERS, THEY RECOMMEND THE MAX PSI LISTED ON THE SIDEWALL.

So...the answer from Goodyear is max psi on the sidewall. In my opinion, there are too many road forces at play in tandem axle trailers to go by static weight.

And....(in another thread) a poster states GY *still* says you can run Marathon ST tires at 10 lbs *over* the indicated maximum pressure on the sidewall...and then 75 mph is OK!..:R - (see link)

"How to
Shed some Tread??"

So -
for the OP - do what *YOU* think is best, or whom you choose to believe...

-and-

the only "dead on" advice is/was to be sure your rims are rated for the pressure *YOU* choose to run.

Happy inflating!..:B



~

wilber1 wrote:
In order to get that ideal floor plan, side to side imbalance can be significant. My unit came with a sheet giving actual weights for each side and pin. Empty, the left side tires are carrying 600 lbs more than the right and because most of the inside storage is on the left side, that difference will be even greater when loaded.

Then add to that weight imbalance is a strong side wind hitting the right side of the trailer adds even more weight on those left side tires on a long all day run and ....... makes those minimum tire pressure charts not the best idea for using on a trailer. Most folks that pull a RV trailer or a box trailer knows about tire temp differences under these conditions.
Sure a LT tire can better with stand this type of abuse over a ST tire but why abuse the tire.

Tire damage is cumulative ....regardless of tire type.

Sandia Man wrote:
ST tires need to be inflated to max psi or near max psi as they are designed for max pressure and will not last long under-inflated. LT tires whether on a truck or trailer can be filled according to the load they are carrying, although it would be wise to add 10psi if using loading chart to identify correct psi, this extra psi will help keep sidewalls from flexing too much.

"An extra 10 psi OVER weight loading table??? Why bother with the table then?? If concerned with sidewall flex, load tire to max sidewall psi recommendation...

I have the GY G614's on my 5er, they were OEM tires...5er has a GVW of 16,950#, 7,000# axles. Per the manufacturer of my 5er, (Monaco/HR), it states to run 110 psi in the tires, same recommendation from GY also

IF going from an OEM "E" rated tire to a G, I agree that one best check their rims to see how much air pressure they can take and use the weight tables to adjust air accordingly.

Don't know what axle weight ratings OP's 5er has or if he "upgraded" from an "E" to a "G" rated tire...need a little more info before we can make a blanket statement.

ST tires need to be inflated to max psi or near max psi as they are designed for max pressure and will not last long under-inflated. LT tires whether on a truck or trailer can be filled according to the load they are carrying, although it would be wise to add 10psi if using loading chart to identify correct psi, this extra psi will help keep sidewalls from flexing too much.

In order to get that ideal floor plan, side to side imbalance can be significant. My unit came with a sheet giving actual weights for each side and pin. Empty, the left side tires are carrying 600 lbs more than the right and because most of the inside storage is on the left side, that difference will be even greater when loaded.

This is what GY Tech support told me when going from E to G tires on our Avion Platinum.

They said to always run what the RV Mfg says UNLESS you are up sizing load range.

They said to weigh each axle divide that weight by two and preferably weigh each tire. Now take the heaviest tire weight look at the tire chart that is for your tire size/load. Add 5psi to the number. The Avion NEEDED 80psi with the E tires and so did the G's so I added 5psi and ran 85psi for 5 years. The tires wore perfectly even with thousands of miles.

Tech said if you run 110psi and only 85 is need for example the tires will wear in the middle have a harsher ride and have less braking.

The reason most should run MAX PSI is because the RV makers MAX out the tires!