I don't think the 555 has more traction than a normal tire. Traction depened on surface area and treadwear rating more than anything. I run a cheap nangkang tire currently (my nitto wore out and I knew I'd be buying new wheels soon) and the thing hooks like crazy, I had a 1.91 60' on them. The 555r is DEFINITELY streetable and will hook very well, it is actually the BEST "damp" road tire I've ever had. Meaning on wet roads (without any depth to the water) they hooked better than any tire I've ever owned. Run them with ~25lbs of air on the street and they will live a long time, any more than that and the centers wear out too fast.