Ye olde TPMS indicator light came on yesterday (that's the Tire Pressure Monitoring System indicator light for you folks way out there in Whack Jack, Pakistan), and a rear tire was found to be down to 15 lbs. of air pressure. Refilled, it was down again overnight, 2 lbs.
So it was Hi Ho, Hi Ho, It's Off To Sam's I Go this morning. They found a little bitty nail in the tire and repaired the hole it made. For FREE. Because I bought the tires there.
Just one more reason to make Sam's Club your tire center of choice.