I wolud agree with the previous comments. Definitely worth a punt. Is it an se with (working) aircon then whats not to like. Not as fast or indeed as frugal as the 525 but a manual is a bonus as nothing to go wrong in the transmission dept. A leather interior is very nice but the headlining will sag at some stage. The black roof bars will look awful but from the pic it seems to have the cross pieces. Nice and desireable.
Red does tend to suffer more with lacquer peel/fade than other colours. The pundits say the e34 is the last BM built before the penny pinchers took over.
Go on you know it makes sense!