[yvesvidal]

I do not think you have to have the exact same tires.

Now, since you have to replace the rear tires with new ones, I would wait for the new Michelin Pilot Super Sport as they are very similar to the Pilot Sport 2 and may be even more affordable.

They are getting rare and rave reviews in European magazines. Apparently, they will last 10-15% longer, give you better grip on the wet, and cost about the same if not less.

Tire-rack may have them already or may be able to tell you when they will arrive.

Yves