|as I can't stand running R comps on the street... I find they tramline like crazy on our nasty broken streets and howl like a banshee on the highway.
Ran Hankook C30's, Toyo R888 (old style, ca 2010) and later Nitto NT-01s. Found driving to and from the track was where they showed how unsuitable for street they were.
Dangerous in cold temps as you have little to no grip, better have some water evacuation tread if you're caught in the rain, and generally poor longevity with the soft wear rating.
However, they are glorious on the roadcourse, especially when you're got some heat into them.
Street drive Michelin Pilot Super Sports, other high HP Z club guys like Bridgestone Potenza RE-71Rs