Tire pressure at 80 PSI ?

Quote: Sorry, I didn't include the manufacture's tag in the first post . Here is the tag . Why is the PSI on the front rim is 45 PSI and in the rear is 80 PSI ?

Because the rear tires carry more weight than the front.
Unless you weigh your vehicle and go by the pressure chart, then inflate your tires to the manufactures specifications as shown on the door jam decal.

Your wheels look like they are on an E-350 Ford chassis like a Pleasure Way Excel. There should be a sticker somewhere in your RV that gives the recommended tire inflation pressure. For a PW Excel it is 80 psi for the rear wheels and 55 for the front. It is very dangerous to drive with underinflated tires. With water, a full gas tank and your travel stuff you will almost certainly be fully loaded and need to fully inflate your tires.

The problem is you can't get 80 psi at a gas station so you need a portable 120 volt compressor to pump up your tires. The kind that plug into your cigarette lighter are no good except for emergency use. I carry a small compressor I got at Sears. Good luck and happy RVing!

Jim

Sorry, I didn't include the manufacture's tag in the first post . Here is the tag . Why is the PSI on the front rim is 45 PSI and in the rear is 80 PSI ?



I only added the microwave and an additional battery to the van . That shouldn't add too much weight .

thanks NHIrish, DUNEBUGGYDOUG , brirene , Mont G&J , jjson775
(and those my post after) for your help.

Moderator had to edit photo to 640

The Max load of 3040 Lbs is at 80 PSI. However, if you determine by weighing your Class B that the tire load is actually less than the Max (3040), you may reduce tire pressure according to the chart below.

I'll agree with weighing the rig to make sure you're not overweight, but also think you should inflate to the pressure indicated on the tire. 25% less that recommended is surely not doing your tires any favors.

For you to get the correct PSI, you must weigh your rig.Based on the weight will determine how much PSI in your tires, not what is stamped on the tires

Yes...assuming the wheels are rated for that psi and an e rated tire was stock on the vehicle. The tire carrying capacity is based on max psi.

Decreasing the psi de-rates the carrying/load capacity of the tire.