Tire pressure for Cardinal 3825

[racindirt06]

Hey guys, just curious on what you guys set your tires at?

[Jestercyco]

Put the pressure to the maximum on the side of the tire. Check often.
Jester

[clr]

For a 5th wheel set the air pressure to the max allowed on the tire sidewall. Air pressure in the tires directly relates to how much load the tire can carry. With a 5th wheel you need every pound of load capacity that the tire can provide.

[racindirt06]

Thanks guys. Tire reads 80, I have them at 75. I'll go bump them up.

[Walking thunder]

I would also HIGHLY recommend different tires. These units should never have left the factory with E rated tires.
You more than likely have 7,000 pound axels and if you look at the placard prob shows GVW rating at less than that like 6800 and change.
You can upgrade to a235/80/16 with a G load range as long as the rims are rated which puts your tire pressure up to 105 psi. This puts you back up to 7k FR used mostly Mendel Rims. It’s stamped on the inside of the rim.
Blow outs on RVs are very common for several preventable reasons. Over weight. Under pressure. Over speed.
235/80/15 and 16 tires are only rated for 65mph. RVs are almost always heavier on one side because of appliances and over loaded.
Combine that plus under pressure and too fast=blow out.

Google Good Year marathon and or RV tire blow out. Good information to read.
Ok off my soap box now.