Hey all, I have a set of Goodyear Wrangler RT/S tires and the COLD tire PSI says 50psi. The manual says 29psi. Who is right? Thanks in advance.

 

I would run 30-32 psi in them. 50 should be a max if your hauling alot of weight. The ride would be to ruff also. I judge the psi on how tires are wearing and the ride quality you want.

 

Thanks Man! I just read the reviews on Tire rack.. The majority says the tire is Crud!
I guess i will just wear them out. Thanks

 

The pressure in the owners manual is near useless except on a basic car. It (usually) doesn't take into account optional tire sizes that may be on the car, and sure doesn't account for different tires or different size tires that we all put on 4x4s. Proper tire pressure is the amount of air pressure it takes to support the weight actually on the tire to result in even tread wear across the face of the tread. Sometimes this isn't possible (try to get even tread wear with 35s on a Toyota, or with 225s on 3/4 ton Dodge diesel!) but that's what you should strive for.

One way to get the pressure right is to get the load/inflation tables for the tires you have, then weigh the truck. Get front and rear weight separately. Consult the chart and find the right pressure. (Don't forget to divide the weight by two....)

A much easier way is to check the tread face wear yourself. You *can* just watch the wear and see if it's wearing down the center (pressure too high) or on the outsides of the tire (pressure too low) then adjust the air pressure accordingly. But, there's a quick way to dial it in precisely. Go to a place where you drive relatively straight on a decent piece of road. Mark across the face of the tires with chalk. Drive. Stop and see where it's wearing off first. Adjust pressure.

This method is perfect, it's foolproof (well, what's foolproof...<grin>) and it works no matter what brand and size tire you have.

Don't forget to check the pressure often, it changes with the weather and really changes with the seasons!

Article: http://www.discounttire.com/dtc/broc...irPressure.jsp

 

Those RT/S Wranglers suck. They are for the street use only. My truck came with them when is was new and at 20,000 miles a rock went right through one of them.