tubeless slow leak

[Kiwi_Roy]

80 PSI 

I'm sure 1 psi loss at even 30 psi in 24 hours equates to quite a few bubbles per minute when it expands to atmospheric pressure (3 times the volume)
i don't think you will get soapy water to work but immerse it in water you can see the smallest leak.

[redrider90]

Last year I had a similar slow leak on a Michelin Defender  1# of PSI  every day or 2.  It took the shop 15 minutes to to find it.  I do not know how much they inflated (PSI) the tire but the leak was caused by a very small silver of glass right where the tread meets the side wall. The piece was about an 1/8" in size. Had to by a new tire as they could not get a patch to stick to the tire as it was in the curved area. BTW my wife said to me oh the low tire pressure light has been on for a couple of days now and I forgot to tell you!  We had just come home from a 70 mile interstate ride when she told me. I was also lucky the TPS was not harmed. I had to be careful not to go off on her. Oh my 7 PSI at 75 MPH in warm temps for 70 miles.