Super C Tire Pressures?

[Capnsteve60]

Sometimes it seems the simplest things get more complicated when you enter the world of RV’ing. Case in point...tire pressures.

I just bought TireMinder TPMS system for my new 2017 Four Winds 35SD. Current pressures are in the mid 70 psi range. I checked the door plate and it calls for 95psi for fronts and 110psi for rears. So I started to look online for what others are saying. Very confusing to a non engineer.

May I ask what others with this unit are running? For the record, I have Continental 19.5” tires with truck tires up front and radials on the back. Thanks in advance for any assistance.

[Mr_D]

I hope all your tires are ALL radials and not bias ply in front and radial in back. No good tire shop would allow that.

[A32Deuce]

Go by the sticker that you got the pressures from.

[Bob_C]

I use ratings on the tire...cold

[Capnsteve60]

Originally Posted by Mr_D

I hope all your tires are ALL radials and not bias ply in front and radial in back. No good tire shop would allow that.

It seems crazy to me, but that’s the way it came from the factory.

[Capnsteve60]

Originally Posted by A32Deuce

Go by the sticker that you got the pressures from.

Thank you.

[Capnsteve60]

Originally Posted by bob caldwell

I use ratings on the tire...cold

That makes sense to me, but a lot of folks seem to disagree. Thanks for your input.

[FastEagle]

The correct inflation pressures for Original Equipment tires is on the tire placard/certification label. You should also check the vehicle owner's manual to see if there are any circumstances or special conditions that would require inflation pressure manipulations above the vehicle manufacturer's recommendations.

[kedanie]

For the OP, keep in mind that any references to federal documents or industry standards that may appear do not apply to the end users. All of that is for the manufacturers producing the RV's.

The best thing you can do in regards to your tires is to get your rig weighed. four corners is best but at least the individual axles. Reference your weights to the tire company load inflation charts. Best recommendation is to add 10% more air pressure and you should be good to go.

Keith

[kedanie]

Additionally, the pressure listed on the vehicle placard/certification assumes that the vehicle is at its maximum weight. Most RV's are not at the maximum. For proper handling and tire wear it is important to weigh the vehicle and set pressures as listed in the tire manufacturers inflation chart. In most cases involving self propelled RV's such as class A's and C's, that will be lower than what is listed on the certification label.

Keith