PH Heroes article on the E28 M5 has got us a bit dribbly over BMW's original large M division offering, with the inevitable result that we've been cruising the classifieds to see what the old girls are going for these days.
Turns out that they're not going very often - the only E28 M5 we spotted was a lonely Lachs Silver example going for £10,995 in our very own PH classifieds (right).
A fairly obvious reason for this that the original M5 never was particularly numerous in the first place - barely more than 2000 were produced between 1985 and 1988, and we're told that only 187 of them found their way to the UK.
Of course, £10,995 can also buy you the 114bhp stronger 400bhp V8 E39 M5. We found this E39 for sale by the same dealer with the E28 M5 - and if you can ignore the pretty painful combo of 'violet blue heritage' leather and wood trim it seems like quite a tidy car for its 64k miles.
It's also pretty indicative of where the market is for E39s, it seems. Leggy pre-facelift cars are going for £8k or £9k, while around £16k ought to bag you a late, low-mileage example with little more than 40,000 miles under its wheels.
Suspension bushes and ball joints also wear out quickly (a tell-tale sign of which is uneven tyre wear). High-mileage cars can also suffer from differential oil leaks, so check for wear on the clutch and flywheel.
Meanwhile - should you manage to find one - an M5 can be had from as little as £3k-4k. This will be ropey though, so you're probably better off looking out for a tidier one for around £11k (just like the one on PH, in fact).
E28s are a simpler proposition than later M5s, however. Even though the engine is hand-built, the car's basic layout is pretty similar to its common or garden brethren, so it's actually surprisingly easy to maintain.