[gliding_serpent]

For sure ktl. But their super sports are 300, the sport cups 60, and i have had both and so i have an idea of what 200 in their books should mean. Mind you, i agree it is all a bit of smoke and magic, especially between manufacturers. And yeah, michellin does not support vintage sizes for these tires... Or i would be all over it (xas aside... But those are no longer cutting edge).

Good point on tread depth. My point related to the michelin tires (sport cup, cup 2, supersports being made of dual compound rubber. Dry on outsides, wet compound on the insides. That presumably is part of how they have been able to push up their tire durability. The supersports went up to 300 after they made only the outside 1/3rd softer dry compound. The rest was more durable wet. Apparently they used to do 50/50 (ps2) and the 66/33 split resulted in no less cornering grip, but the overall longer life. Now, that is presumably for street cars that lack proper negative camber, and which tend to ride the outside of the tire in cornering anyway. Cool tires. You can actually see the variations in rubber color for each compound type when the tires have worn down and heat cycled a bit.

So i am assuming that the trofeo r runs dual compound also, not just assymetrical tread... But pirelli is mum on their site. As a result, if you flip the tires to combat assymetrical wear, you may hurt cornering grip. I need to verify what Pirelli does.

Oh, and sport cups, even new, were terrifying in the wet. The super sports are brilliant. Back to 911, Re-11a's were pretty good in the wet. But it is the only tire i have run on my car to date.