I'm certain Michelin is giving preferential pricing to driving schools using their tires. That said, feedback from the schools is they are sticky and the tires hold together- you'll agree it would quickly get expensive for either Michelin or the school if they were falling apart.
For One Lap Michelin hasn't sponsored for years, and tire rack gives an equal discount on any tire brand they sell- no monetary preference for the Michelins. The Michelins are generally chosen (and win) for overall performance over tires like the AD08, RS-3 and Star Spec for two main reasons I think. First, wet performance, as you pointed out. Second the format rewards tires that work well cool and get up to temperature very quickly, as you often don't have a chance to get the track specialists up to temp from the first lap. I agree that if you were only running dry, hot tracks the choice would swing towards a AD08 or RS-3, but the point remains that for that type of all around test, including track, there currently isn't a better tire. The BFG Rival might change that. If not it's clear Goodyear and others are gearing up to field something better.
For now, however, you might consider trying a set of the PSS at some point, even at the track. With the 30k treadwear warranty there isn't that much to lose, assuming you have a use for street tires.
Anyway, back to the topic, forget the V12s. Between the RS-3 and Spec V2, I understand the RS-3 is more forgiving at the limit than the V2, but is probably trumped in every other way.
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1M, GT4, 1969 Porsche 911 w/ 997 GT3 Cup Motor (435hp & 2,100 lbs)
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