Tire Pressure is suppose to be...

[Shakesbear]

51 psi or more and they will blow in short order

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[KSC Grey Ghost]

I have Wildpeak AT

3. 235/65/17 on my XLT Hybrid 32 psi cold 35 PSI when hot . 8000 miles rotated at 5000 been From Tn to Ca no problem .

 

[Gpp]

I run 35 lbs in all my vehicles in winter and use the same tester .i would rather have a little extra in the winter due to temperature changes .

 

[BClubb352]

My Ford Pass app says recommended cold pressure is 35 front / 35 rear. Owned it for a week and tire monitoring says all are high. Go look at the tires and they state maximum pressure is 51 psi.

What are you guys running or what are we suppose to be running? Stock XLT tires

Proper tire pressure is always on a sticker inside the drivers door jamb. Get a decent gauge and adjust them all accordingly.

 

[S. fisher]

Just about every mid sized vehicle recommends 35 psi, including some larger trucks like the F150. The maverick is basically a station wagon with a small truck bed In place where the third row seat would go.
These vehicles come with passenger rated tires, so 35 psi is generally the recommended psi.
Of course, after they wear out you can replace them with a stouter tire.
If you are going to tow or put a load in the back you should air up to at least 40 psi.
Tire gauges can be bought at any auto parts store for cheap, I keep one in every vehicle I own.

 

[GPSMan]

I put 40 psi in the rears.
I have FWD.
I left 35 psi in the fronts since all traction for me is from the front.
Higher PSI in reason generally makes tires last longer.
Higher PSI in reason generally improves MPG.

 

[desmobob]

My XLT EB 4K tow was delivered with 45 PSI in the Conti ProContact TX tires. I dropped them to 35 and the ride is a bit nicer.

 

[OleFordGuy]

pretty good explanation from a google search below. mine came from factory with 41 lbs in each, I lowered them to 35 lbs shown on the tire. Much better imo.

(Article): Inflating tires to the correct pressure is one of the most important factors when inflating a tire. Both under and, over-inflating a tire can actually be detrimental to the performance of a vehicle and to the life of a tire.

Over-inflating tires causes the sidewalls and tread of the tire to become harder than normal. This can reduce the traction and performance of the tire, as well as cause uneven tire wear. When the pressure is increased beyond the recommended pressure, the contact patch of the tire actually shrinks. The increased pressure causes the center of the tread to protrude further out than the rest of the tire tread. This is a problem because now the majority of the tire’s traction is coming from only the center of the tire, reducing the overall contact patch of the entire vehicle. This is also why overly-inflated tires show signs of uneven wear along the center. Over-inflated tires will show signs of accelerated wear along the center, because the center is making more contact with the road than the outside edges are. This same decrease in contact surface can also cause a drop in mpg, as the engine now has to work harder to compensate for the reduced contact patch.

Over inflating tires can not only be detrimental to the performance characteristics of a vehicle, it can also take away from the comfort and safety of the vehicle as well. Overly-inflated tires will also cause the vehicle to have a harsher, more unstable ride than properly inflated ones. Tire sidewalls are meant to support the vehicle as well as absorb some of the shocks and bumps from the road’s surface as the vehicle drives over it. When the tire is overly-inflated the sidewalls become harder, and instead of absorbing the road bumps and shocks, they are transferred straight through to the vehicle’s suspension. This can result in a harsher ride, as well as increased road noise from the tires. In severe cases, when dealing with older or severely overinflated tires, the tire’s sidewall may even be put at risk to blowing out due to the increased pressure.

It is generally recommended that the tire’s on a vehicle always be inflated to the proper manufacturer’s suggested pressure, and never past maximum pressure indicated on the sidewalls. Keeping the tires at the suggested pressure, as well as rotating them at regular intervals, is the best way to ensure that you get the best performance as well as the longest life out of your tires.

 

[NebraskaMan]

Ok, will stick with Ford recommended 35 lbs. Thanks everyone!

 

[icegradner]

I put 40 psi in the rears.
I have FWD.
I left 35 psi in the fronts since all traction for me is from the front.
Higher PSI in reason generally makes tires last longer.
Higher PSI in reason generally improves MPG.

Running too high can cause uneven tire wear, and reduce the life of the tire. It also makes for a rougher ride. That said, putting in an extra 5PSI likely wouldn't be enough to cause a problem, unless the ambeiant temperture is high (over 100°F) to start with.

 

[GPSMan]

Not likely, proven.
35 psi is pretty darn squishy.
50 psi is a safe upper limit for the XLT stock tire.
You'll feel more bumps, and some say continued use can create more rattles in the car/truck. So there can be a down side. But it's absolutely safe for the tires.

This does not constitute grossly over-inflated, just constitutes maximum inflation.

Ask any commercial delivery person.
Ask any police or highway patrol person. Don't necessarily ask your dealer.

Every tire on every vehicle owned over the past 30 years has exceeded the tread life rating on my tires which I run a little firm for additional MPG.

 

[Deleted member 1483]

I did some research and found its not harmful to be a little higher or lower than the stated PSI. You might want pressure lowered if you are doing some off road driving. Higher PSI might increase MPG slightly. Short answer is just try to keep them to manufacturers specs shown inside your drivers door.

 

[raymaines]

I find the in truck one to be off from every tester I've used. From the old analog stick type, digital meter, to my 12v air pump, they all show 4-5PSI more than the tire pressure sensors do.

That's kind of funny. My dashboard says all four tires are at 37psi and my digital meter says 35'ish. It's all close enough for me.

 

[icegradner]

That's kind of funny. My dashboard says all four tires are at 37psi and my digital meter says 35'ish. It's all close enough for me.

In theory they should be calibrated the same at the factory, but I'm sure there is some variance, that's to be expected.

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