Not great honestly. If you look at the tire rack ratings, they are like #28 in it's class, which is pretty pathetic. If you are set on a Grand Touring Tire, there is not much in the OEM size that is any good. The Pirelli Cinturato P7 A/S Plus II is pretty good, but it's only V rated instead of W rated, so some tire shops may refuse to install that tire becuase it is below OEM spec. Discount Tire will probably mount it for you as long as you don't have a MYP, as I've seen people sporting Cross Climate 2 on the inductions from Discount Tire, and that is also V rated. (MYP has the speed limiter set higher than the capabilities of a V rated tire)
If you are ok with plus sizing the sidewall a little, you can get a Vredestein Quatrac Pro in 255/50-19. A lot of people have been really happy with this tire. It even has a 3 Peak Mountain Snowflake emblem.
The Conti DWS-06 Plus and Michelin Pilot Sport A/S 4 both come in the OEM Gemini size, and those are fantastic tires...