Presently running Michelin 4S on my ‘03 986S with MY’02 wheels and love them. I can vouch for the tires being great for the above vehicle up to 135 mph.
I look forward to seeing the “stance” with the spacers added. The 550SE came with 5 mm spacers all around right? So this would be an additional 10 mm (~0.5”) of outward poke per wheel.
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