Citing "insurmountable logistical, scheduling, and health problems," the Beastie Boys announced in a statement yesterday that they have officially canceled their "Rhyme & Reason 2000" tour with Rage Against the Machine. The tour, to have originally begun in August, was put on hold after Mike D (nee Diamond) hit a New York City pothole while riding home on his bike from rehearsals. He later underwent surgery and intense physical therapy, say reports, but his recovery is still not sufficient to undertake a tour, the group says.