Tire keeps losing pressure - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 5 (permalink) Old 09-16-2018, 03:12 PM Thread Starter
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Tire keeps losing pressure

I've observed one wheel/tire constantly losing pressure over the past several weeks on my 2014 Touring 19" OE wheels. This set of Kumho LX tires have just over 20,000 miles on them. I've taken the car back to the shop that originally mounted them and that also does my rotations and balances. They've taken the tire off and say they don't see or feel any damage to the wheel or the tire. They replaced the valve stem and dipped the tire in water to look for bubbles with no luck.

The tire kept losing pressure so I finally just installed a new tire on it. Well, 5 days later that tire is also nearly flat!

So I've eliminated the tire as the culprit and the valve is brand new. Could this be an issue with the wheel then? Seems like the only other logical choice. I've looked around and about $150-$160 shipped is the best price I've found for a used 19".

Can anyone suggest another possible way forward?

Fwiw, it's a slow leak and takes several days for the TPMS to alarm.
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post #2 of 5 (permalink) Old 09-16-2018, 06:35 PM
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Originally Posted by dasrider View Post
I've observed one wheel/tire constantly losing pressure over the past several weeks on my 2014 Touring 19" OE wheels. This set of Kumho LX tires have just over 20,000 miles on them. I've taken the car back to the shop that originally mounted them and that also does my rotations and balances. They've taken the tire off and say they don't see or feel any damage to the wheel or the tire. They replaced the valve stem and dipped the tire in water to look for bubbles with no luck.

The tire kept losing pressure so I finally just installed a new tire on it. Well, 5 days later that tire is also nearly flat!

So I've eliminated the tire as the culprit and the valve is brand new. Could this be an issue with the wheel then? Seems like the only other logical choice. I've looked around and about $150-$160 shipped is the best price I've found for a used 19".

Can anyone suggest another possible way forward?

Fwiw, it's a slow leak and takes several days for the TPMS to alarm.
Well, I don't see what else the problem could be.
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post #3 of 5 (permalink) Old 09-16-2018, 07:36 PM
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Originally Posted by Get Inline View Post
Well, I don't see what else the problem could be.
Same here - Unless you want to try a different tire place and have them try and figure it out and remount/seal the tire to the rim?

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post #4 of 5 (permalink) Old 09-17-2018, 09:36 AM
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I would say buy a 12 Volt portable air compressor for around $35 from Amazon and keep it in the trunk. Top up the air once a week. You end up spending less money and have a air compressor that can be used for other vehicles too that you may own.
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post #5 of 5 (permalink) Old 09-17-2018, 10:00 AM Thread Starter
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I've already got a portable compressor that I've had for a while now (invaluable at trackdays on the motorcycle) and I've been maintaining pressure myself regularly. Problem is that my wife is driving the car now (best MPG of our cars) and I don't want her to have any issues while on the road. I've found a used oe 19" wheel off fleabay so we'll see how it does.


Just wanted to see if anyone's run into an issue like this before.
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