Slow Leak

My front right tire seems to have a slow leak, that I've been monitoring for the past month or so. Seems to be loosing 1-2 psi a day on average, where the other tires are holding much more steady (with exception for temp fluctuations). I've checked for punctures & haven't found any. Any next-step suggestions? Slime?

For refererence its a Toyo Open Country AT3 265/75/16, under a year old, and has probably only seen a couple real trails this year.

 

Submerged completely in water? I had a similar issue a while back and it ended up having a tiny nail with no head , undetectable to the eye. But it bubbled when completely submerged.

 

Lift that corner up, might be easier to remove the wheel. Then fill the tire to max pressure, get a large spray bottle with soapy water and spray the whole tire and rim on both sides, on the tread until you find the leak bubbling over. Could be the tire, could be the rim.
Much easier than a dunk tank.

 

Slime is great for emergency when you find the leak, though can’t seal holes in the sidewall, bead, or the rim. And tire shops “hate” working on Slimed tires; ppsssshhhttttt it’s not toxic and easily removed with water.

 

And it destroys TPMS sensors!

 

Typically the bead or valve stem

 

Or a tread puncture.

 

Or a fast leak

 

DON'T use slime. Just makes a big mess. Take it off & throw it in a swimming pool. You'll find the hole right away.

Buy a cheap patch kit or a good one like this:

 

Take it to @Discount Tire and let them fix it? It's kind of what they do.