How do the European-specification and North American-specification E39 M5s differ mechanically?
Aside from minor mechanical differences required to meet specific safety and emission regulatons in each market (such as positioning the exhaust catalysts closer to the engine on North American-spec models), E39 M5 is essentially the same worldwide. One notable excpetion is the exclusion of the European-spec M5’s two-piece front brake rotors on the North American model.
