The CLK55 is cited at 362hp and 376 lb-ft, roughly 3,600 lb, with 0-60 quoted between 4.8 and 5.2 seconds. The easy power makes it break traction readily, and owners note rear tires wear noticeably faster than fronts.
CLK55 performance figures and rear tire wear
Mercedes-Benz CLK55/CLK63 AMG (C209) · driving