Shah,
Tire Rack shows the Pirellis arrival late January. I would wait for two reasons: The TB-15s are 335/35 and thus are another 1/2" shorter, plus the Pirellis do have matching fronts in stock at 225/50-15. At almost 2" shorter than the "optimal" Pantera size, the TBs will start looking silly on the car. I haven't any experience with the Michelins, but the Pirellis are nice tires, in my experience.
Good luck!
Mark
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