yar the biggest bug is that it always has small stones/pebbles stuck in its groves, because they are wider, just like dunlop touring r1, moreover, on asphalt roads, you hear each and every road patch you cross.... as for wet road grip, i did not notice any specific road grip advantage.
it will cost you almost equal to advan db, which is far better in terms of being soft and silent. earlier advan db had swollen sidewall issue, however, with 552, yokohama is addressed all the concerns... i am a big time fan of advan db