Well, I can only speak of my personal track experience, but I've heard the same from fellow instructors and racers. I've had Sport Cup 2s, RE71Rs, and NT01s on my M2 for multiple track events at the same circuits. I was consistently putting in lap times that were 2 seconds faster around the 1.53 mile Lime Rock track (high 0:59 laps) with the NT01s or RE71Rs, as relative to the SC2s. I saw roughly the same wear rates between the SC2s and RE71Rs (about 4-5 days before the tires were heat cycled out), while the NT01s easily went for a minimum of 10 days and continued to get faster until the chords. Aside from fastest single lap times and wear rates, a more interesting aspect to these tires is how they reacted to being pushed. Both the RE71Rs and SC2s were good for a fast lap or two before they overheated and started to get greasy, needing a few laps to cool down. The NT01s were consistent for a full 20 minute session of fast laps. Not as precise feeling as the RE71Rs, a bit of a blunt instrument, but extremely grippy and better break away characteristics than the RE71R. Given that I accomplished the same times with the NT01s as with the RE71Rs, while they cost the same but last twice as long, the NT01s are still the best track day tire I have driven to date. With regards to wet driving, the NT01s are fine in light rain once warmed up. But they will hydroplane in any standing water.

Pros: wears like iron, has good dry grip even down to 15C, but not so good where you get away with bad driving. Cons: hydroplanes on standing water, is a bit noisy, One of the best values in track day tires that can be driven on the street.

I've driven the same set of NTO1s tires on two different MINIs - lightweight FWDs with LSDs and BBKs - firstly an R56 John Cooper Works GP (GP2) on a hillclimb, and basically, these gave me an 'unfair advantage', in that they heated up quickly and gave me tons of grip and confidence on an unknown hill. They were spectacularly good fun. I then drove the same set of tires on an R53 MINI Cooper S (also heavily modified) on a number of circuits, and the grip is outstanding, so much so that I could exit a tight corner on three wheels, lifting the inside front. Nothing else we've driven comes close. And surprisingly enough, they've held up to a lot of track work, and still have a couple of mm of useful life. They do respond to a good set up so you can make the msot of the nice clean consistent grip (they don't take an age to come on and then overheat). They're basically lethal in standing water though, as once the grooves have gone, they're like full slicks. Don't drive them in anything other than merely damp conditions. I'd buy them again if I could find them...

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Dry grip: handles 750nm torque on an almost 2-ton car very well. Sometimes a light spin in first gear. Still, it is not the fastest nor the grippiest semi-slick tire.
Wet grip: drizzle is fine, light rain is okay (just be smart about it), anything more and it’s skating on ice.
Road Noise: on par with others in the category.
Wear: this is the best part; it doesn’t. You can expect 16x 15-minute sessions when rotated on a square setup.
Handling: not the best communicator, but warnings are audible and traction does break predictably.

Very good dry traction with these tires. Hard to even spin the tires off the line. However, keep a watchful eye for standing water as this tire does hydroplane in wet conditions. Otherwise, regular wet traction is pretty good as well. Painted lines and markings on the road do not go well with this tire too. Especially when wet.

Insane dry grip great handling.. a quite noisy but i don't personally care about that.

Brilliant tire and will buy again!!

Dry grip is insane and on a heavy car they warm up pretty quick as you would expect from a semi slick.

With 100 wear rating, they have done about 8 track days and still grip even at the tread indicator level. So definitely great value even at the recent price increase.

Can happily drive on light rain but you would be mad to drive them on heavy rain.

Only bad thing about them on a heavy car is that they heat up after about 6 or 7 laps. Possibly not a concern for lighter cars.

Very VERY sticky tire when warm.

Used as grip tire in the front on a pair of 18x9.0" wheels.

Stuck to the road much like shit to a blanket.