I have the RA1s on my stock 16" wheels which I use for the autoX and road racing. Turn in and grip is amazing and I think it would be a awesome street tires as long as it doesn't rain. I sometimes leave them on during the work week so I can flog the car for fun around on and off ramps, so far they have lasted pretty long (I'm comparing these to the GY Eagle F1/180 tread ware). I haven't tried the Yokos, so I'm not sure how it would fare. But from what I hear the Kumhos and the Toyos seem to last longer than others, but the Toyos cost more and are better suited for endurance racing...
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David Z.
Silver E1 #4808 w/stuff
http://daplace.spedia.net
