I think it might be the 270 SottoZero's for the 309s. Haven't been available at TireRack since I've been checking in January, unfortunately. Unless i'm goofing up the search somehow, of course! I've asked about them in an email. The response was unclear, but I think they said they'd have them when available from Pirelli. Pirelli shows them as on offer, so I don't know if that means there's a supply issue or what. Maybe they do a seasonal batch production on such tires??
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