[WXman]

I run 35 psi.

30/33 was the spec with 4-ply rated stock tires, why the hell would I run 15-20 more pounds of pressure with 10-ply heavy duty tires? They actually wear and ride better with LESS than stock pressure. Only reason I run 35 is to try and get slightly better MPG while not ruining the ride quality. I have no idea how you guys stand to drive with 50 PSI in the tires on a 1/2 ton truck. That's got to be awful.

Also, as was mentioned the 10-ply tires are rated for nearly 6 tons of total load capacity as a set of four. These trucks have what, 7,000 lbs. of GVWR? So we only need half of the max air pressure.

 

[Powertechn2]

I think I have said it before, but I'll say it again.

Contact the tire mfg, and they can run your truck, and tell you what psi they should actually be at.

 

[SlimTRD]

There is so much bad information in this thread.
E load tires are totally fine running in the 30-40 PSI range. The only difference between them and a C load are additional steel belts in the tire, which makes them stronger. The idea that they "need" more pressure to run safely is just not true at all. They are ABLE to run at higher PSI due to the additional strength, and for those that tow and haul heavy loads this can be advantageous. It is also true that running higher PSI can increase your gas mileage on the highway, but I have tested the difference on my truck and it's next to nothing.
Those that want to argue, realize that off roaders run these E load AT tires well below 20 PSI for extended periods off road to get additional grip and contact patch. The tires handle this just fine.
So please stop spreading misinformation. You can totally follow the PSI guidelines on the plackard in the door frame, and it is not unsafe at all.

 

[matie43]

I hope you all realize the placard on the inside of your door is ONLY FOR TIRES INSTALLED BY THE OEM meaning, whatever stock brand tire they installed is the recommended air pressures for those only. if you change them out for a new brand or size, or a combination of that, go with whats printed on the sidewall of your tire, NOT the shiney placard where you find the VIN number on.

 

[jw4514]

The PSI levels you guys are talking about are incredibly low. I have had two 3/4 ton trucks which came with Load range E tires, the manufacturers recommended pressures on both were 65 front and 75 rear. I cannot imagine running one of these tires at 35 psi, you would be putting immense pressure on the sidewalls. The tire is designed to be run with high levels of air pressure.

If you run them at 35 on a 2500, they will blow out within months. Seen it happen. May get away with it for a while on a unloaded tundra.