fifth wheel tires

Wheel specifications are set by their manufacturer and certified by the SAE.

NHTSA does not require wheel manufacturers to display the wheel’s specs on the wheel. When we do find such markings on the wheels it’s normally there because of an agreement to satisfy an OEM wheel provider.

There are three distinct specifications for wheels. Maximum load capacity, Maximum load capacity accompanied by maximum inflation pressure in PSI. Wheels marked with a maximum load capacity only, generally will accept whatever PSI is necessary for the tire to provide the maximum load capacity of the wheel.

NHTSA does require the wheel manufacturers to display a serial number and part number on each wheel. The address of the wheel manufacturer must also be on the wheel. It’s highly recommended to confirm any misunderstandings about a wheel’s capability by direct contact with the wheels’ manufacturer.

fj12ryder wrote:
I think a lot of newer rigs are coming with wheels that will handle up 110 psi. Our 2010 triple axle toyhauler came with wheels rated to 110 psi, even though it came with "E" rated ST tires. So it definitely would be worth checking.

Theres the rub, you got a wheel that will handle 110 psi, but may only be rated for 3750, where now the Sailuns are rated for 4080, and 4400 depending on which 16" size is chosen.

Basically you got a tire that really can't be utilized to its potential , because the limiting factor is the weight rating of the wheel, sure you can inflate to 110 psi, but can't load it up to its weight rating.

laknox wrote:


Sometimes, you have to dismount a tire to check the wheel rating, because it may be stamped in the "valley". I know that the Al wheels on my old Komfort were capable of E rated tires even though my placard was for D tires. I went to E's as soon as I realized this. That being said, I =seriously= doubt a rig placarded for E tires would have G-capable wheels on it...so the wheels would likely need to be replaced as well as tires.

Lyle

I think a lot of newer rigs are coming with wheels that will handle up 110 psi. Our 2010 triple axle toyhauler came with wheels rated to 110 psi, even though it came with "E" rated ST tires. So it definitely would be worth checking.

eHoefler wrote:

pcaffrey wrote:
This may be off subject but I notice people citing wheels capable of handling pressures pressures, how can you determine what your wheels are capable of handling. Thanks

The wheels should have the capacity and max pressure stamped/cast in the wheel.

Sometimes, you have to dismount a tire to check the wheel rating, because it may be stamped in the "valley". I know that the Al wheels on my old Komfort were capable of E rated tires even though my placard was for D tires. I went to E's as soon as I realized this. That being said, I =seriously= doubt a rig placarded for E tires would have G-capable wheels on it...so the wheels would likely need to be replaced as well as tires.

Lyle

pcaffrey wrote:
This may be off subject but I notice people citing wheels capable of handling pressures pressures, how can you determine what your wheels are capable of handling. Thanks

If no pressure rating the max weight rating should collaborate with a tire load/pressure rating. Or contact the manufacturer or distributor.

pcaffrey wrote:
This may be off subject but I notice people citing wheels capable of handling pressures pressures, how can you determine what your wheels are capable of handling. Thanks

The wheels should have the capacity and max pressure stamped/cast in the wheel.

This may be off subject but I notice people citing wheels capable of handling pressures pressures, how can you determine what your wheels are capable of handling. Thanks

smarty wrote:
Need to replace tires on my 38' fifthwheel that weighs 18,000 lbs
Tires that came with rig are five ply
I got a great deal on 12 ply tires
Any reason for not upgrading to 12 ply tires?

None tha I know of. CK out Goodyear Endurandce.
Am told they are made in the USA..

I travel mostly in the west and northwest, and when I replaced the tires on my toy hauler, I specifically went to Les Schwab because of my experience with their customer service.
I bought G rated Geostars and have been very happy with them. You need to have wheels rated to 110 psi. The tires are either 12 or 14 ply "rated". They are heavy and can be regrooved if needed.

cummins2014 wrote:

3 dog nights wrote:
Goodyear G-614's !

Why not, and pay double for them over the Sailuns, and arguably an inferior tire to the Sailun, but JMHO

OHOA - "Other's Humble Opinion Also"..;)

However, *maybe* GY will pay for tire failure damage to the owner's trailer, as they did for many years with Marathons.

Unfortunately, no compensation for down time..:(

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