Those all seem on the 'light' side. Not sure what they are including in this weight. It is well documented even on BMWUSA website that the S65 weight is 202 kg (445 lb) like I mentioned in my previous post. In browsing online I found weights for the S85 and S62 in a comparison that CAR magazine did.
S54: 478 lbs, 217 kg
S65: 445 lbs, 202 kg
S62: 527 lbs, 239 kg
S85: 529 lbs, 240 kg
Good Read! http://www.europeancarweb.com/featur...e60_m5_engine/