I had issues with "my" 530i (A V8 one, closely related to the 540i). Not something I'd recommend running on a shoe string, but it was a bit of a beast (when it worked). Let's not get confused though, it is a fully fledged barge, and not the "Well, it's sort of alright on B Road" type of barge either. Actually, barge is perhaps the wrong word, oil tanker is slightly closer to the mark. Great cars, but perhaps not what you're after?
Whilst you're considering barges, could perhaps I tempt you with a Soarer? Very much so like a Supra, only more comfortable and without the scene tax.
Perhaps a bit dear, I want to make sweet, sweet love to this one:
http://www.pistonheads.com/sales/2017891.htm
Good chassis underneath them (99% of it's Supra stuff), good reliable (not to mention very tunable engine!) and not too bad around the track either. Think someone recently came 2nd in there class in a mechanically standard automatic in the Toyota Sprint Series.
Off the track they are a relatively spacious, quick (60 in around 6 seconds, Top speed of 160 - 170MPH depending on who you talk to) comfortable "barge". Doesn't really feel it's size though, think it's actually a tad larger than the e34 but feels far smaller. Cheap to run given the performance too.
That nutter went for the no cost option velour.
I see a Bentley FS with velour today too AHHHHHHHHHHHHHHHH
