Can anyone read what the max tire pressure is on the sidewall of Cooper Zeon LTZ's?

Can anyone give any input, on what is a good pressure to run these tires at for "on the pavement" running in the 275x60xR20 chrome clads on an 03 QC sb 4X4???
I'd like to run the psi that Hammer suggested on another thread at 70-80% of max pressure.
I'd like max wear and max fuel economy from these tires.

Al.

 

Al,
Typically, they are designed to be run at the Vehicle Manuf. recommendation.

I found the Pdf on yours and they calling out a 50 psi pressure, which seems rather high.

My truck comes with tires that max out at 80 psi, but the recommended empty pressure is 40 psi front and back.

I guess I'd start at the recommended pressures posted on the doors--and go from there

 

The pressure on the door is recommended for a STOCK size, STOCK load range tire. Yes, I agree that a lot of engineers with big fancy degrees put a lot of thought and design into this, but when you change to a different type of tire you have to weigh in what the manufacturer of the tire designs the tire to run at.
You have a lot of "play" in a modern radial tire and can easily run a 50 or 60 psi tire at say 34 lbs (or whatever the door sticker says), but you will get a LOT of friction and drag from that tire, resulting in premature wear and not the greatest handling, especially at highway speed.
A good buddy of mine owns two tire/auto repair shops and told me to run my tires at 70-80% of the max rating way back around 1993. I've been doing so ever since and have gotten tremendous wear out of my tires.

I have been running my current FCIIs at 40 psi (max is 50) for just shy of 30k miles and guys on here who have seen them can attest to the fact I might have 10% wear on them, if that...

From the Cooper website:

Any underinflated tire builds up excessive heat that may result in sudden tire destruction.

Refer to the tire placard on the vehicle (check vehicle and/or vehicle owners manual for placard location) for the recommended operating inflation pressures. These pressures must be maintained as a minimum. Do not exceed the maximum pressure indicated on the tire sidewall of passenger car tires.
If you are replacing the original size tires with tires of a different size, you must consult a knowledgeable tire dealer to determine the correct inflation pressure for your new tires.

 

Good to know--thanks

 

Thats some good info there guys.

I don't know if it's my eyes, probably is at my age , but I can't for the life of me see the info on my Cooper LTZ's???
Anyone help on the max tyre pressures on these tyres?
Al.

 

Website don't say a word, Al... not even on the specs page...

 

Looks like page 4 says 50psi for them.

http://www.coopertire.com/FI_Uploads...Zeon%20LTZ.pdf

I run mine at 35 front and 32 rear. Ran the stock tires at the same psi. Ran my 37" Graps at 35/32 and got 50-60K out of them with even wear throughout.

 

I looked at the PDF and does the 50 psi mean, the max tire pressure?

Al.

 

Yeah, I would assume that's the max cold pressure rating. IMO you'd ideally want to be runnin' them anywhere from 36 to 40 psi...

 

Cheers Hammer.
Al.