This Volvo S90 shipped with summer Pirelli P Zero tires on 20 wheels, but we needed all season tires and there aren't many choices in this size. We knew the 20 wheels and summer tires would be a problem when we bought the car. We tried to find a 19 option, but that didn't work and instead we arranged for Volvo to install Michelin Pilot Sport AS 3+ tires, which was the only tire Volvo would agree to. That was great, except the Michelins completely ruined the ride. Compared to the Pirelli P Zeroes, which rode great right off the lot, the ride on the Michelins was stiff, noisy, and harsh with too much road feel. The Michelins are highly rated performance tires, but they are the wrong tire for this car. If you have a similar Volvo with 20 wheels, be aware that the Michelins are on the extreme end of the sport/performance spectrum and you will pay a price in ride quality and noise.