If my recent purchase of a 2007 550 is any indication, if you do end up buying one, ABSOLUTELY buy a warranty with it. Mine's been close to a disaster. I've paid about $2800, but the warranty covered the remaining what-ended-up-being-$16K pretty much engine rebuild. » 3/28/14 6:09pm 3/28/14 6:09pm

Sometimes PPIs aren't enough. Some things on the first 5ers I looked at were obvious, and immediate walk-aways. Some, not so much. Thankfully I didn't have any bodywork shit, just the leakiest seals anyone's ever seen. I haven't seen my 550 since the last week of January. Pretty much a total engine rebuild. No matter… » 3/15/14 3:09am 3/15/14 3:09am