This is very helpful, thanks.For a high powered muscle car / sport touring / street car: Nitto NT555G2 in front, NT555RII in rear. I would not put RIIs in the rear of a handling car; you can tell that the sidewall is not as firm as a similar sized Michelin, but mine haven't tried to kill me yet. I have had butt puckering moments with NT05Rs while performing abrupt lane changes at freeway speeds.
The Nitto RIIs provide noticeably more grip on the street than the NT05Rs that they replaced at the same tire pressures; I have run both on my car between 680-730whp. They also aren't terrible in the rain when new. I got stuck in traffic in Myrtle Beach during a downpour and had no loss of traction while driving appropriately for the conditions. Also, no cracking or ill effects from 40-50*F winter garage storage, but I do not drive my car in temps below 50*F.
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With the Nitto RIIs, any similar issues with abrupt lane changes at freeway speeds?