2018 Thor ACE 27.2 tire pressure question

[BeaverCamper]

Getting ready to take out our new RV for the 2nd time.
As it sat all winter I wanted to check tire pressure.
The Thor label inside next to drivers seat stated 82 lbs.
However when I checked all the tires they were all closer to 90lbs and the tire itself said 110 lbs cold.

I know tires are inflated differently depending on use and on our old RV I went by what the RV manufacture recommended however there is a big difference between 82 lbs and 110 lbs.
The tires are:
Goodyear 245/70R 19.5
G70 RV

Anyone with a similar RV ACE 27.2 or similar tires I would be interested to know what you run them at.
Thanks!

[way2roll]

BeaverCamper wrote:
Thanks good to know I wasn't losing my mind with those numbers:)
I appreciate the help.

It's a light coach on the 245's. I had the same thing with our first gasser that weighed in about the same. It was a little harsh due to the lower weight. The dealer had about 90 psi in the tires and it was like riding on bricks. 82 seemed to be the sweet spot for ours. Rode them like that for 3 years with no issues before we sold it.

[BeaverCamper]

Thanks good to know I wasn't losing my mind with those numbers:)
I appreciate the help.

[way2roll]

BeaverCamper wrote:
Ok I had to rush a little at the scale as there were a few trucks behind me but I got 5900 on the front and I believe the rear was 9990 but as I stated since I was rushed not sure if that is rear or total vehicle weight. The GVWR of my rig is listed as 16000 lbs.

I looked at the Goodyear tire care guide but none of the numbers for my tires match up:
Goodyear 245/70R 19.5G
G70 RV
Manufactured in 2017

I must be doing something wrong......
S/D numbers range as follows:
3640/3415
3740/3515
3890/3655
4190/4115
4335/4265
4540(G)/4410(G)

So you're 5900 on the front divided by 2 for each wheel is 2950. Your rear 9990 divided by 4 for all 4 tires is 2497 per tire.

you are well below the 3640 for Single and 3415 for Dual at the lowest PSI which is 80. So you can inflate to 80 all the way around. Some say give yourself an extra 5 lbs, I always ran mine at 82.

[BeaverCamper]

Ok I had to rush a little at the scale as there were a few trucks behind me but I got 5900 on the front and I believe the rear was 9990 but as I stated since I was rushed not sure if that is rear or total vehicle weight. The GVWR of my rig is listed as 16000 lbs.

I looked at the Goodyear tire care guide but none of the numbers for my tires match up:
Goodyear 245/70R 19.5G
G70 RV
Manufactured in 2017

I must be doing something wrong......
S/D numbers range as follows:
3640/3415
3740/3515
3890/3655
4190/4115
4335/4265
4540(G)/4410(G)

[Dale_Traveling]

Placard pressures are not factory empty weights but are the pressure needed for the tires as supplied and the front and rear axle maximum capacities. The Ford placard will list the same pressure as what the Thor placard lists but how does Ford know which make or model house is built on the chassis or how much it might weight?

Stick with 82 psi which. It's a safe number that you can verify by cross referencing to Goodyear's tables against the placards for any make or model.

Next opportunity drive across a CAT Scale just to ensure the coach doesn't need to go on a diet. I to the scale run every spring and the first stop when we head out on summer vacation.

[way2roll]

Load your RV for travel, people, fuel, water, food etc, and have it weighed. 4 corner weights are best but 2 axles will do. Then adjust PSI based on the tire manufacturers chart. Max will give you a very harsh ride and is intended to be just that, the max psi at max load. The sticker in the RV is pretty generic and was put on at the factory not loaded for travel.

[BeaverCamper]

Great thanks for the link. This should answer my questions!

[GPWayne]

Read this tire manual. It will tell you all you need to know.

https://www.goodyearrvtires.com/pdfs/tire-care-guide.pdf