I've read about lots of other tire choices but when it comes to finding summer tires in the right size (245/50 ZR 17 99Y) and with plenty of lateral grip the Pirelli's keep popping up. In fact, I can't find other summer tires in this size. Each time I research a different tire, it is either an all-season tire (which I don't need) or it is available only in a different size.

Does anyone think there is a better summer tire out there that is available in the right tire size?

Lots of windy roads here on Maui (with breathtaking ocean views but also precipitous drops if the tires don't hold) so lateral grip in response to spirited, active cornering is a priority.

Also, as the Jag is rear wheel drive, I'm guessing that it takes directional in the front and asymmetrical in the rear. Does anyone know for sure? The vehicle care book simpy states "Asimmetrico."