Super early impression is positive. Comparing to Continental Extreme Contact summer tire is not necessarily a fair fight, but holding up well, and feeling good. Contis (currently for sale on NYC Craigslist) had crazy nice handling on rails feeling, but maybe at compromise of a little comfort. Nittos feel a little softer, which is good for me, since I'd like that comfort. -Have not driven them much yet.
On a separate note, I had them mounted at a Brooklyn tire shop which was fine. But, there is always the torquing issue with some shops, so I usually just re-torque myself after getting home. This was much harder than with old 850 (which had a couple occasions of broken socket adapters), since they sometimes jam them on to 200-300 ft lbs. I broke one this time too, needed to upgrade my pipe extension breaker, and there was still one bolt that was scary tight. Happy ending, I hit it with Blaster penetrating, waited over night, and it loosened in the morning. 102 ft lbs for my 2006 V70. Will check torque again in a couple weeks, and get alignment...
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Farewell 'black manta' ('97 850) Hello 'rocket sled' ('06 V70R)