Tire Pressure Slow Leak??

had this exact problem. Eventually gave up looking on the tire and had the wheel cleaned up/sanded. Fixed.

 

Good for scotty. I've done hundreds of tire repairs for customers with both patches and plugs and that stuff is nasty and annoying to clean up.

Also consider, you really shouldn't be putting any liquid of any kind inside a tire, it'll throw the balance off and be sloshing around in there.

 

I'm not advocating for using liquid slurry tire sealing solution, but as long as the substance stays liquid (and doesn't congeal into a gel or solid,) shouldn't the rotation of the tire automatically balance out the liquid as soon as the tire is spinning past 60-70 rpm? (That's how those loose-bead tire balancer materials work.)

 

I had a slow leak of about 1 PSI per day that went on for 6 or 8 weeks. I just kept airing up whenever the TPMS light came on, about once a week.

Eventually I bought a standard plug-type tire repair kit on Amazon & decided to try to track down the leak.

Put truck rear axle on jackstands, rotated rear tire & sprayed copious amounts of Windex® all over tire looking for bubbles. Surprisingly, even a leak of just 1 PSI per day is enough to blow small visible bubbles/active foaming within a few seconds.

Located the leak which in my case was coming out from under the fully-sunken head of a short nail which was driven straight in (perpendicular) in the center of the main tread pattern.

Extracted the nail & used the tire-plug kit to prep & plug the hole. This was about 500 miles ago & the leak / PSI loss is fixed.

Because the hole was small, clean, and vertical, right in the middle of the strongest (belted) part of the tire, I'm not worried about it blowing out under load. If it had been at the edge of the tread or in the sidewall, at the very most I'd have just driven slowly on the temporary plug to get to a tire shop to buy a new tire.

 

Mine doesn’t but I wish we did, that stuff is nasty and it gets all over the machines and any tools we have set on the machine. If you go this route, tip whoever ends up having to take it off.

 

I don't know, I've never put liquid inside a tire before

 

I really don't care about tire shops they rip customers off everyday. Thats why i mount my own tires screw tire shops why would I take it to tire shop when I can mount it myself??

 

I had a nail or something one time and it was in main tread area but due to the angle the nail punctured the belts it could not be patched it was over a 1/4 inch i think and they said they're patches did not go higher than that. It was odd that the nail hit it at such an angle but doing that def made it damaged more surface area. In this case fix a flat i do not think would have worked either.
It seems most of these patches or goo inflatables are really for small diameter abrasions.

 

My wife's '07 Highlander has the same thing. Since it was happening before we put new tires on and is still happening I suspect the shop didn't do a sufficient job cleaning the rim.