Unfortunately I need to replace one OEM Bridgestone Potenza summer tire on my 2017 ST. I picked up a nail at the absolute edge of the tread. One more half inch and I wouldn't even have run over the nail. I'm retired with two other cars so I hardly ever drive this. Believe it or not it just recently turned over 1,000 miles. Not a typo. It only comes out of the garage on nice days in the summer. The OEM tire is a Potenza RE050A. Apparently it's out of production. In my time zone the dealers are all closed now so tomorrow I'm going to call my Ford dealer to see if they may have one in a warehouse somewhere. If anyone knows where I can get a new one of those that's great. Other than that I'll have to try and match it as close as I can to a different tire model. I hate doing that but I'm not going to replace all four tires that are basically still new just to have a match set. Any help greatly appreciated