What does this mean?

[Winged_One]

Links fixed

Can anyone decipher this:

Sendal says "3580 LBS @ 100 PSI & CERTIFIED SAE J1204 SPECS"
Sendal wheel

A different wheel at trailer wheels.com says: "3,960 lb Capacity @ 110 PSI & CERTIFIED SAE J1204 SPECS"
Different wheel to use as an example

Thus, is the Sendal rated for 100 psi?

[Francesca_Knowl]

CapriRacer wrote:
Wheel failures are exceedingly rare, but those failures are usually attributable to either road damage or manufacturing issues, such as poor welds.)

Evidently that's just what happened to this O.P.- he must've lost track of this thread and has posted another asking for recommendations for replacement:

Winged One wrote:
Just found one of my wheels cracked.

Need recommendations of a replacement quality 16 inch wheel (6 or 6.5 wide) that can handle 110psi.

Just got G614's last year, so no 17.5's please.

What can you recommend?

Link to thread

I wonder if the G614's went on the OEM trailer wheels. According to this link, the G614 requires a "special high load capacity wheel". I can't find specs for the o.p.'s OEM wheels, but if they're still on the rig and rated for 80psi or so, might the 110psi of the G614 be a factor in this case?

[CapriRacer]

Winged One wrote:
Links fixed

Can anyone decipher this:

Sendal says "3580 LBS @ 100 PSI & CERTIFIED SAE J1204 SPECS"
Sendal wheel

A different wheel at trailer wheels.com says: "3,960 lb Capacity @ 110 PSI & CERTIFIED SAE J1204 SPECS"
Different wheel to use as an example

Thus, is the Sendal rated for 100 psi?

The SAE J1204 is a wheel test - so what that is indicating is that it passed the test at those conditions.

Does that mean that the wheel is capable of running in the real world at those conditions? Absolutely not - BUT - passing the test conditions is an indicator of a quality level.

Winged One wrote:
Follow up question.

Can we assume that manufacturers of wheels and tires account for heat build up while in use that increases psi?

A wheel or tire rated for 80psi.

When you tow the vehicle, it can easily go up to 90psi from use.

Thus, do the manufacturers account for this and their wheels and tires can handle going to 90psi?

Just an example.

All tire pressures are cold unless we are talking about pressure buildup.

And, yes, you can assume that tires and wheels will withstand normal pressure build up (10% to 15%). In fact the tests are run with tires "capped" - meaning the pressure is allowed to build up - and since these tests are pretty extreme, the pressure build ups can be quite high.

Besides, tires and wheel don't fail from pressure build up. Tires fail from the heat being generated or road damage. The pressure buildup is just an indicator of the heat build up. (Wheel failures are exceedingly rare, but those failures are usually attributable to either road damage or manufacturing issues, such as poor welds.)

[Winged_One]

Follow up question.

Can we assume that manufacturers of wheels and tires account for heat build up while in use that increases psi?

A wheel or tire rated for 80psi.

When you tow the vehicle, it can easily go up to 90psi from use.

Thus, do the manufacturers account for this and their wheels and tires can handle going to 90psi?

Just an example.

[Winged_One]

Thanks for the help! Looks like those wheels are good for 100psi. There was some confusing information out there. Wanted to ensure the statements actually meant, good to 100psi.

[Alfred622]

Tire pressures can be confusing - Think of them this way. You want the pressure in the tire that will keep the tread in good contact with the road. Too low pressure the middle of the tire does not press hard against the road. Too high a pressure the middle presses real hard but the edges don't. The right pressure, the tire edges and middle all equally share the weight. Now the tricky part is, the right pressure depends upon how much weight you're asking the tire to carry. The more the weight, the more the pressure is needed to keep the tread flat on the pavement. This works great - until you get to just too much pressure in which case the tire would rupture. Fortunately, every tire manufacturer I know gives you a weight chart. You get your axle weight measured at a truck stop, say it is 12,000 pounds. Ideally you measure both sides and each should be close to about 6,000 pounds. Take the max weight (6,000) and divide it by the number of tires on that side (in my case, 2 tires on the right and two on the left). So I now each tire needs to support 3,000 pounds of weight. Then I look on the chart and see that I need to inflate to 80psi. And, that is just what I do. The tire chart also says max inflation is 110psi but I'm well below that limit.

So your Sendel tire, if inflated to 100psi, would be flat on the pavement if it was supporting 3,850 pounds. If you're loading it with less weight, less PSI is needed.

Does that help?

[fj12ryder]

From what I read the Sendel T03-66866T** wheel is rated for 3580 lbs. @ 100 psi.

Seems pretty straight forward, what part don't you understand?

[Francesca_Knowl]

FYI:

The links in the opening post don't work.

[wa8yxm]

Differences in the metals and/0r the thickness of the wheels (I assume these are rims) means they can take higher or lower pressure and loads.

NOTE: these are the ratings for the metal.. Now when you apply rubber it too has ratings, both a max capacity and a max PSI (The standard mold says something like

Maximum load of 3,000 pounds at maximum pressure of 90 PSI

(Numbers picked out of air do not represent any actual tire)

This means if you are (in the fictional example) only loading the tire to 2500 pounds.. You use LESS air pressure.. The tire maker will tell you which.

But if you have tires which max out at say 120 PSI, and rims that max at 100 PSI,,,, Use the tire maker's pressure chart, but do not exceed the rim's ratings.

[skipnchar]

It is telling you the maximum weight the wheel is designed to carry and the maximum air pressure it is designed to withstand. There would be no advantage to purchasing tires that exceed these specs as these numbers would remain your limitations. Of course if your AXLES were rated for less weight then THAT would be your limitation. Limitations are ALWAYS the lowest rated component.