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Tire Pressure

Rock1500

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Rock1500 Senior Enthusiast

Rock1500

Posted
Posted

So I am curious what tire pressure does everyone run on their tires? I have the stock AT tires that came with my truck. I was doing my fall check up of my truck and cars and I filled my tires up to 46lbs each since they can go up to 51lbs from what I read. I took the truck to the dealership the following week to do an oil change and tire rotation and when I get into my truck they are all set at 38 lbs. So I am curious what people run and at what I should run them at.

 

Thanks!

redwngr Senior Enthusiast

redwngr

Posted
Posted

So I am curious what tire pressure does everyone run on their tires? I have the stock AT tires that came with my truck. I was doing my fall check up of my truck and cars and I filled my tires up to 46lbs each since they can go up to 51lbs from what I read. I took the truck to the dealership the following week to do an oil change and tire rotation and when I get into my truck they are all set at 38 lbs. So I am curious what people run and at what I should run them at.

 

Thanks!

What does the label on the door of YOUR truck say.

 

Assuming you are using the factory tire, go with GM's suggestion. (the label will also indicate what tire size was installed when built)

 

The numbers on the truck are suitable for the load that the truck is rated to carry.

 

Mine calls for 32 for fronts, 35 for rears.

When empty, I run 32 all the way around.

jonboy77 Enthusiast

jonboy77

Posted
Posted

I am actually going to change my pressure today. I been meaaning to since i noticed they inside the door calls for 32 and i back in august from the dealer it was at 42.

ewbldavis Enthusiast

ewbldavis

Posted
Posted

I upped mine from 35ish to 40ish.

 

I'd have to look at sidewall again. I think it stated 45 max - OE Wrangler RS-A. I upped it a bit because of the cold (was down around 30 psi), and always have run 40 or so.

 

I had Dayton's on my Trailblazer - rode best and towed best with about 45 PSI in them.

Eddie 70 Senior Enthusiast

Eddie 70

Posted
Posted

I have always ran in the 38-40 range on my cars. Today when I got in my truck around noon, I noticed the two fronts were 31 and 32. The rears were 32 and 33. Tomorrow I will check all the tires in the driveway and adjust them up.

redwngr Senior Enthusiast

redwngr

Posted
Posted

If they are factory tires, it's the sticker on the door post that needs to be looked at.

 

When the tire is manufactured they don't know what vehicle it's going on, but the do know the max load/air pressure combination that the tire is designed for.

JcMont Enthusiast

JcMont

Posted
Posted

The pressure rating on the side of the tire is max pressure for that tire, unless you are heavy towing there is no need to be anywhere near that number. Op, use the number on the door. I keep mine at 34 all around.

 

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gone_fishing Enthusiast

gone_fishing

Posted
Posted

Just my 2cents but I wouldn't recommend running the rear tires (at least if you have the Wrangler SRA) too high. This is assuming you don't have much for extra weight in the bed. For awhile, I was running 40 PSI all around on my Sierra. Thought maybe I could squeeze out a little more fuel economy but honestly, I don't think it made any noticeable difference.

 

Anyway after about 10,000 miles I rotated the tires and noticed the center of the rear tires was worn more then the outer tread. A tell-tale sign of over-inflation. The fronts were fine (even wear across).

 

I just replaced OEM Wrangler SRA tires (after 53k) with Cooper Discoverer ATW. I probably could have got another 10k out of them but with winter arriving, I didn't feel like going another season with the SRA's. I plan on keeping the rears around 32-34 and maybe the fronts a few PSI higher 34-36 (just so they don't have that "squished" look).

tnchevy Senior Enthusiast

tnchevy

Posted
Posted

Your door jamb will give the pressure for stock tires or any other P rated tire of the same size. If you go bigger and or a LT tire then go to Toyos website and download their tire pressure chart for different tires than OEM.

mafd2 Senior Enthusiast

mafd2

Posted
Posted

An overinflated tire is stiff and unyielding and the size of its footprint in contact with the road is reduced. If a vehicle's tires are overinflated, they could be damaged more easily when running over potholes or debris in the road. Higher inflated tires cannot isolate road irregularities causing them to ride harsher and will wear pre maturely. However, higher inflation pressures usually provide an improvement in steering response and cornering stability up to a point. This is why participants who use street tires in autocrosses, track events and road races run higher than normal inflation pressures. The pressure should be checked with a quality digital air gauge as the inflation pressure cannot be accurately estimated through visual inspection. I've always ran 36psi on my GM trucks whether they were 20's or 22's and think this is the happy medium with a good ride and even wear.

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