Newb Front Tire Question 88Y or 92Y Pilot Super Sports?

[DRGETZ]

QUESTION:

Do any of you more seasoned Boxster owner's have experience/knowledge to share regarding 88Y's and 92Y's front tire size performance differences and/or feedback regarding Pilot Super Sports especially in wet conditions?

Bought my first Porsche, a 2000 S (41K miles) about 2 months ago and looking to replace my YOKOHAMA ADVAN NEOVA® AD08R with some Michelin Pilot Super Sports.

Two FRONT sizes listed for the 2000 Boxster S (18") on several online retail sites:
225/40ZR18 (88Y)
225/40ZR18 (92Y)

The 88Y's: 6.3" tire width
The 92Y's: 8.2" tire width

BACKGROUND INFO:

Live on Okinawa (Japan) with rains year-round. Temps average 82F and only 3 months of sub 70F with lows reaching about 60F (with wind-chill factored).

In other words I live and drive (aggressively when safely possible) in a warm, wet climate.

Okinawan Roads can be very slick, especially since they use crushed coral in their asphalt mix.

The Yokohama's have great DRY grip but the rear wants to slide out every time I drive across WET painted pavement such as cross-walks, etc.
(Pretty much 50% chance of rain every day on this island.)

Read that Michelin Super Sports performed better than the Michelin All Seasons (A/S) and would like to try the Super Sports before giving in to All Season tires.

Thanks in advance for sharing your time and knowledge.