I too am now running Bridgestone Potenza All Season all around. Had them on the front when I got the car and just put them on the rear a few a weeks ago replacing what was there (can't remember what they were). Much quieter. Not ultra high performance tires but my wife doesn't drive the car like a hellion. My XF is a daily driver and I like all season tires in Virginia. Supposedly the Potenza will hold up longer delivering higher mileage before replacement but, of course, that does come at the price of losing some performance if you do drive your XF like a hellion.