Noticed a small sheet metal screw in the RR tire yesterday. Well these Pilot PS4S ain't cheap and still had life at 35K. I knew I had no choice so off to Costco to order new rubber. I chose the Pilot Sport All Seasons this time, for about $80 less per tire. Not sure if I'm happy with this decision. Anyways it will be at least 4 days for the new tires and the tire was losing air. A plug will do for now. GS350 will not be used much until installation.