Some of you may recall that on the Lexus below, I installed a brand spankin' new set of Lexus F Sport wheels last summer. All has been going well with them. Considering the car only has about 50 k miles the wheels REALLY make the car look MUCH newer than it is. My problem is with one of my rear tires. I seem to have a SLIGHT leak in it which is causing a 5 PSI leak over a one month period. I've closely followed all the other tires and they all seem to be holding PSI's relatively consistent. I don't think it's the wheels that are are fault, but maybe the bead? or maybe the TPMS? or the tire has a nail in it? Not sure really Considering the leak is so small, I almost doubt I'd be able to find it with soapy water in a spray bottle. Should I have this tire taken in to have the leak repaired? I could just keep topping it off monthly and in doing so prevent any scratches etc. caused by the tire shop. I'd also save the money since we hardly drive this car at all (about 3k miles per year). What are your thoughts?