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I was thinking about the hard compound for day to day road use plus a few track days here and there. Also in the wet these tyres are very good (at least for my NA)... 
Not bad grip at all. I'd have thought harder tyres won't be more fun on track either... 
Even just try turning left/right in a straight line (like warming up the tyres), feels really wallowy. 
! 
the kumhos are actually track day tyres not like the r1rs/ad08s which are marketed as trackday performance but can be daily driven.(fronts) v70a's and r888 are around the same lap times tbh not alot in it. im running 24F 26R R888's I found I got better rear end grip with 235/50/15 R888s that I did with my 265/45/16 V70a tyres (and a hell of a lot less rear arch rubbing - that was with fully rolled rear arches too, lol) Given that they only come with 5mm of tread when new it doesn't take long to reach that point stephano wrote:
those pressures are very high for track use.
I do a lot of miles and I get through one set of rears a year and one set of fronts every 2 years. To get around this I had them pumped up to 34psi and the car is great fun cornering.(It used to annoy some drivers of much more expensive cars as they could not hold my lines on the country roads so they would cut the corners even across double white lines to keep up with my mr2 within the speed limit. Some would back off after getting a bit too close to a hedge or kerb or oncoming traffic. Sometimes I would slow down to encourage them to stay on the correct side of the road, but then they would tailgate me instead - idiots!). 
Perhaps they have improved them!.. which is the book figure for a new rev3 turbo engine, although mine is one fuel tank fill up short of 300,000 km!