Question on wheel psi rating

CapriRacer wrote:
I have spent considerable time trying to figure out why wheels do not routinely have max load and max inflation pressure stamped on them. Because wheels is not my area of expertise (tires are!), I have tried to find folks who are knowledgeable on the subject - which can be a bit of trick trying to sort out who are experts and who just have strong opinions.

- BUT -

It is my understanding that there is no regulations for wheels to have load and/or inflation pressure maximums stamped on them.

It is also my understanding that it is the LOAD on the wheel that is important and not the inflation pressure.

And that the loading on a wheel is generally limited by the bolt hole configuration, so there is no need to stamp the wheel as the bolt hole configuration is enough to limit what vehicle it goes on and what type of tire goes on it.

So I am of the opinion that the only area where people need to worry about is where the powered vehicle is re-engineered and on trailers where the trailer manufacturers haven't done a good job of sizing the wheels/tires (a common problem for trailers!)

- and that given the choice between using a higher pressure in a tire to get more load carrying capacity (and thereby reducing the risk of a tire failure) and exceeding the stamped wheel limitations for pressure, the former is preferable over the latter (keeping in mind it would be best if both were possible!).

So, are you saying you would not hesitate to inflate load range D tires to 65psi on 60psi wheels?

coolbreeze01 wrote:
Is there really a psi rating on the rims for this trailer, 2015 Jayco Whitehawk 27DSRL?

Yes, my wheels (rims) are Sendel T09 as stamped on the backside of the wheel. You can go to the Sendel website and look up the specs. It seems they do not make a 14" wheel rated for any other than 60psi max.

I have spent considerable time trying to figure out why wheels do not routinely have max load and max inflation pressure stamped on them. Because wheels is not my area of expertise (tires are!), I have tried to find folks who are knowledgeable on the subject - which can be a bit of trick trying to sort out who are experts and who just have strong opinions.

- BUT -

It is my understanding that there is no regulations for wheels to have load and/or inflation pressure maximums stamped on them.

It is also my understanding that it is the LOAD on the wheel that is important and not the inflation pressure.

And that the loading on a wheel is generally limited by the bolt hole configuration, so there is no need to stamp the wheel as the bolt hole configuration is enough to limit what vehicle it goes on and what type of tire goes on it.

So I am of the opinion that the only area where people need to worry about is where the powered vehicle is re-engineered and on trailers where the trailer manufacturers haven't done a good job of sizing the wheels/tires (a common problem for trailers!)

- and that given the choice between using a higher pressure in a tire to get more load carrying capacity (and thereby reducing the risk of a tire failure) and exceeding the stamped wheel limitations for pressure, the former is preferable over the latter (keeping in mind it would be best if both were possible!).

Is there really a psi rating on the rims for this trailer, 2015 Jayco Whitehawk 27DSRL?

Run them at 65 with confidence. The tire will fail before the steel wheel fails. We are talking 5 psi here

Coming from a commercial haulers background I sure wouldn't recommend anyone exceed a wheels load or pressure rating. The wheel mfg gave your wheels a pressure and load rating for a reason. I've seen and I've been a victim of the folly of exceeding either one.
I would run the wheels at max pressures. Tires heat up at highway speed so they may be close to 65 psi anyway. 5 psi over on a new wheels max pressure isn't a concern for the wheel as it won't be close to the max load.

Usually the wheel may crack around the tire bead seat flange when max loaded and over pressured. Been there and done that in my younger and dumber days.

Also, the 195r14 is the same physical size as a ST205; the 205r14 is about 1 1/2" larger in diameter and may rub, in my case they would have almost touched each other.

I have the same wheels on my Rockwood 2703ws and installed Hankook RA08 a lil over a year ago, they too are load range D, 2100# cap. and 99 mph rated. I run them at 62 or 63 psi and have had no problems

It is not recommended that you exceed the maximum pressure for the wheels. A wheel or rim failure could result.
ST tires are rated for 65mph max. Some brands can go to 75mph if pressure is increased by 10 psi above max as long as the wheel rating is not exceeded.
Discussion here: Special Trailer (ST) tires

I would run 65,75, or 80. Imo D's are good and E's are better. Wheels aren't the weakest link.

Have confidence in your new tires.