Ongoing issue with loss in tire pressure

weird. can you define which tyre in each instance and how much pressure was lost? have you considered check the pressure everyday to try to determine what's happening?

wait a second, temperature change? were they talking to bill belichick?

i'm thinking that your tyres need remounting or new valves. they might be losing a small amount of pressure daily, but more at highway speed.

 

Leaky valve stems or seals with rims, and/or rim cracks or porosity?

 

Yeah...make sure Tom Brady gets nowhere near your Prius.

 

He's already been there a couple of times from what I read...

 

That's unusual P loss as per above may need to have Toyota check rims and re-mount tires.

 

..assuming you just didn't have the misfortune of 3 way FOD.

This is a safety issue and they know it...so you need to document and squeaky wheel this one to Regional and Corporate. Worst case they fix them (all), best case you get 4 new tire/wheel assemblies to make you go away...and there's almost always a set of take-offs laying around at the dealerships if your willing. Be polite, but move fast and with authority on this one.

 

Huh...

It IS a safety issue...so you really need to get to the bottom here.

Strange though. As they say, it's not Rocket Science. Your tires are losing air. And you would think there would be a finite, or relatively easily to ascertain reason as to how.

I'm assuming the dealership would check all the obvious things. Like the tires themselves being defective. Defective stems and valves, or improper seating with the rims.

Which makes me oddly think that perhaps it is something that is ONLY manifesting when you drive the vehicle an extended period of time. So everything "appears" fine when the vehicle is stopped and not moving.

Is it possible you have defective rims? That somehow are becoming unseated properly with the tires as the tires heat up and under the stress of operation?

I've never heard of this happening before. But it just seems so unlikely that you would get 3 defective tires, and even if that DID happen, that it wouldn't be obvious upon investigation that they were defective.

I suppose you just do what you are doing. Document the problem. Keep focused on the solution, until you find the solution. If you change tires and the problem goes away, you can assume it WAS something wrong with the tires. If the new tires demonstrate the same problem? Then it obviously wasn't the tires. Which would lead me to start questioning the rims..and/or the suspension itself.

Your vehicle is so new, I'd think I'd just say...hey, let's just replace all 4 tires. With less than 2,500 miles? I think Toyota should foot the bill.

If the problem is happening with 3 of 4 tires? Why are they just giving you one?
And have they tried something as simple as moving the one good tire to a rim that is experiencing the air loss, and switching it with one that is on that rim..to see if the behavior manifests from the rim and position or the tire itself?

 

Relax, Toyota isn't some scam artist, your dealer nevertheless

Obviously, something's fishy, I'd go so far as to put a motion detecting camera pointed at the vehicle, someone may be playin fun...

In the meantime, put a few drops of oil on the valve stems when they are down, air bubble are obvious, a valve stem tool to tighten a loose stem to remove clean and reinstall a dirty stem is a good tool.

Nobody but nobody has ever had these symptoms, something's fishy, the tires are sold and installed by the multi-million, as are the rims, relax, err, get a good air pressure gauge.

Wow, just reread this, slick advertising by ???
I certainly didn't put shortcuts to consumable and or consumer products, not happy it happened, bs

 

as per post above the leak rate is so fast you should almost be able to hear it.
Check with soap solution valve stems, and heck I'd just mix up some Dawn+water in a bucket toss it on a tire.
I'd be listening for gurgles and looking for bubbles.

 

You CAN lose some pressure due to cold weather, enough to set off the tire pressure warnings. Obviously a tire that goes flat has a leak, let them replace your Bridgestone (probably) and be done with it. Any side of the road tire shop can take the wheel off and submerge it in water to find a leak.

 

I am in the south and it does get cold enough for those pressures IF you start with tires that were adjusted to 32 after they were driven (eg after the tires heat up). You should check and adjust the tires first thing before you drive.

 

are you starting with 40 psi?

 

Any competent tire shop could quickly identify the source of a leak. A dealership is not competent, apparently.

I had a tiny nail in one tire, it leaked 5lb in about 2-3 weeks. Took the tire shop 10 min to find it.
Skip the dealer completely and go get some competent tire service.

 

Get on FaceTime with the dealer when you are checking the tires if you need proof.

 

You can go ahead and tell us the tire brand because we need to know that. We will probably say that tire is a good one, presumably with no history of problems like that. Whatever happened is probably not the tire itself, probably another root cause which escapes me at the moment.

 

Agreed, but this car is 2 months old so it's on them to fix or replace (assuming you did not FOD your tires). Escalate this as I mentioned mfeubanks.

 

As AirBoss said, leaky (or maybe cross-threaded) valve stems is a possibility. It would seem more likely that one guy mounted them wrong rather than you got a bad batch of tires that all were damaged. It's also possible that someone vandalized the tires prior to your purchase, but that should be rather obvious upon inspection.

As Frodoz737 said, hold the dealership accountable for resolving the issue. Escalate as necessary until you find someone who will take ownership of the issue.