I'm curious to see if any other Pacifica owner is having the same problem I've been experiencing. I have a very early '04 with every option, including the chromed 17" wheels. Pretty much every time I use it after it's been sitting for two or three days, I have to put air in one or two of the tires. I've taken it to several tire dealers to dunk-tank test the tires, and the only thing they can come up with is "corrosion at the rim/bead area". I've never experienced this with any of the other care I've owned. Is this common in Pacificas, or is it just with my vehicle? The car now has 107K on it, and I'm the original owner. Thanks for any advice.

 

Since last Fall, all four tires have been re-mounted due to rim leaks.

 

I realize this thread is waaaay old, but wanted to chime in on our woes with this. We have an '04 with the "chrome-clad" 19" wheels, and we are also getting the low pressure light every month or so. Only thing that our shop has come up with is corrosion around the bead. Actually looking to finally replace the wheels to get rid of this annoyance...

Peace!

 

Only experienced this (somewhat) on my 98' Cirrus(with the chromed rims). Rims need to be sanded down and re-balance

 

Just thought I would wrap up my part in this subject, as I finally traded my Pac. last year on a new Mazda CX-9.

I eventually had all four tires removed from the wheels, then sanded the insides of the beads to remove all the corrosion (there was plenty!). Once that was done, I applied three coats of build-up primer to the the insides of both beads on each wheel. It took me a full day to complete this process, but once I had the tires re-mounted, I enjoyed a full year of no air pressure loss. Wish I had done that when I first started having the problem!

 

Awesome, thanks for the follow-up! My wife and I were just debating the cost of new wheels and tires (approx $1200!) vs. just purchasing 2 tires every few months and living with the low air/refill hassle. Nice to know it can at least be prolonged with a little time and effort... Peace!

 

Happy to help! By the way, if you do expend the effort to do this, don't forget about the TPMS sensors. If they're more than five years old, the integrated batteries are likely on their way out (not replaceable), and you'll start receiving the dreaded STSS message, even if the tires have plenty of air in them. If they're old, you might want to replace them to save yourself the inevitable hassle. Even if the sensors are not old, be sure to replace the stem mounting gaskets when you have the tires off to correct the corrosion problem. They'll cost you about $3.00 each. Best of luck!

 

There is such a thing as "bead seal" which is a compound they put on the sealing surface of the rim before mounting the tire to reduce or eliminate leakage.