Cooper Rugged Trek Air Pressure

[Burnt Money]

If anyone needs to know what Cooper recommends for the Rugged Trek tires in 265/70r17 LT I received this when I asked.


Hello Andy,



Thanks for your email. Because you went from a standard load, 4-ply rated tire to a load range E, 10-ply rated tire, you can bump the air pressure up a little bit. We would recommend between 42 to 45 psi.



Have a Great Day!!!



Eric

Consumer Relations Specialist

Cooper Tire and Rubber Company

1-800-854-6288

Monday-Friday 8:00am-5:00pm EST

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[Blmpkn]

The chalk test is the only real way to accurately figure out what pressure the tires should be at.

 

[Burnt Money]

The chalk test is the only real way to accurately figure out what pressure the tires should be at.

I agree 100% on the chalk test. I figured the information from the manufacturer would be a good starting point.

 

[Blmpkn]

Did you specify they were going on a ranger?

 

[Burnt Money]

Yes, in the initial email I stated it was for a 2020 FX4 Crew Cab with the towing package. I figured there could be different recommended pressure between a Ranger and 1 ton.

 

[mtbikernate]

it's an interesting thing to me that for truck tires, when you get a stiffer sidewall, you increase the pressure (at least for road use, I guess).

but in mountain bikes (which I'm more familiar with), using tires with a stiffer sidewall means you drop the pressure.

 

[JCMAC]

If anyone needs to know what Cooper recommends for the Rugged Trek tires in 265/70r17 LT I received this when I asked.


Hello Andy,



Thanks for your email. Because you went from a standard load, 4-ply rated tire to a load range E, 10-ply rated tire, you can bump the air pressure up a little bit. We would recommend between 42 to 45 psi.



Have a Great Day!!!


Consumer Relations Specialist

Cooper Tire and Rubber Company

1-800-854-6288

Monday-Friday 8:00am-5:00pm EST

I have had the 265/65/17 Lt tires and factory recommended pressure is 38 psi. That included the punishing ride. I can only imagine how rough the ride is at 42-45 psi. Additionally when off roading the normal case is to reduce tire pressure substantially.

 

[Burnt Money]

It’s not bad at 40psi but they are also brand new. I’m going to chalk them the first day it’s not going to rain and see how they look.

 

[Grumpaw]

I recently got rid of the OE tires on my Scab which were nothing more than big car tires, at 32-34 psi, and had a set of Yokohama Geolander G015 E rated 10 ply's installed. Went with E rated as we tow a heavy travel trailer with around a 700 lb tongue weight.
When running daily pressure is at 40 psi all around. When we tow I bump the rear's up to 50 psi....makes a huge difference when towing...no more sidewall flex and no "squiggling"....rig runs straight and true.
I do not find the 40 psi, when running empty/daily driver to be harsh or punishing....only really noticeable when there is a bump like a transition going over a bridge. I would guess that the psi to run in your E rated tires is all dependent on the load you carry and the road surfaces you encounter daily.

 

[Whiplash]

I have Cooper Rugged Trek XL rated , reinforced sidewall, 255 / 70 / R18 , on my truck....I have a little over 2 years , almost 10, 000 miles on them....

Chalk tested , 30 psi front , 28 rear, with about 150 lbs in bed.....I keep them at 32 front 30 rear....I will air down to 16 lbs sand , 18 -20 rocks ,
I have rotated and balanced them twice, at every oil change....They are wearing evenly across the tread pattern, even with my out side of Ford spec alignment numbers...( high Caster ) ......Good Tires....

 

[Frenchy]

I would only run that high of a pressure if I wanted to feel ever bump in the road. I say start with the door placard pressure and go from there. Mind you I found 30-32 PSI both front and rear to do just fine for me.

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