Kumho Ecsta SPT for $85 (UHPS tire) or Ectsa ASX (UHPAS tire) for $77 from Tirerack.com, its what i'm running on my 3 series (and my 911), they're a great tire for the money.
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2011 Subaru Forester - the daily driver kid hauler
1990 Miata - track whore
LOVE THIS TAMPA CAR RACING SCENE