Losing tire pressure issues?

[Deleted member 12286]

I took my Maverick in for a tire that keeps getting low a month ago. They could not find anything wrong with it.
Well I have to take it in tomorrow for the same issue. I get an alert and it was at 27 psi.
Well now since I have been tracking that tire I started on the others. A week ago all tires were 35 psi. The bad tire is 32 psi and now the other 3 are 33 psi.
These are the Pirelles 225/65/17.
I have already purchased new Toyo 245/65/17 open country AT tires because I wanted a better off road tire and better looks.
I was just curious if anybody else is having issues with these tires.

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[Deleted member 12286]

I have the Pirellis 225/65/17 and last month I took it to the dealership due to one of my tires keeps getting low. They could not find a leak. It did it again it went down to 27 psi.
I always put the tires at 35 psi.
Since I started having the issue with the tire I started watching my other 3.
They have went down to 33 psi after I just filled them to 35 psi a week ago.
All these are cold tire pressures.
I have to go back to the dealership tomorrow for that one tire again.
I just purchased Toyo 245/65/17 AT Open Country tires because they will be more aggressive in snow and mud and look better.
I plan on selling my others after tomorrow.

I am wondering if anybody else is having tire issues with the Pirellis.

 

[PapaDave]

No problems so far, almost 9,000 miles since November.

 

[bgn]

Enjoy the Toyos. Running the same for over 7000 miles now.

 

[SkeeterB]

Yes, same issues you had. Can't wait to toss them for something better. I'll keep filling them untill they die. Front left is worse. Looses 1-2 psi per week. No indications of leak with dish soap.

 

[Deleted member 12286]

Yeah my issue started around 1500 miles.

 

[icegradner]

Two possibilities if there isn't a leak in the tire itself. 1) Whoever mounted the tires at the factory didn't do the bead on the tire properly. 2) The valve stem is bad.

 

[riverrat373]

I love my Toyos on my F150!

 

[kcirevam]

Check the TPS sensors. Sometimes the o ring leaks.

 

[Deleted member 12286]

Yeah I forgot about the TPS o Ring. I will tell dealer to look at that.
When you have to go back a second time for the same tire you would think they would replace the valve stem and TPS o ring. They are cheap to replace.

 

[PapaDave]

No problems so far, almost 9,000 miles since November.

Well, my front driver's side tire showed 28 lbs going to work and 24 lbs coming home. I spoke too soon. Les Schwab is closed on Sundays. May have to switch them out this week. Since I got the truck the pressures were in the low 40s.

 

[Deleted member 12286]

My local dealer found a issue where the factory installed a clip on style weight on the inside of the rim. It was leaking due to this.
The factory could have done this to a lot of trucks. They installed the stick on kind. .

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