One of my tire deflates from 32 to 9-psi mysteriously every two weeks. The other three tires are fine, they hold charge pretty well. They're all the same brand. The tire in question have good threads and never been punctured, other than being aged from the sun.
I remove the wheel from the car and inflate it to 40-psi. I submerge the tire into a pool of water. No air bubbles! I pump it to 44-psi. No air bubbles! I install it onto the car and it begins its slow leak. I have another Honda that does this. I just give up and buy a new tire. Would you have pump it to 50-psi? How would you have done it differently?
TIA, Tibur Honda Accord `92 130K, Toyota Tercel 140K mi.