For $15k to $20k (US) it's possible to buy a very nice E30 M3 or E34 M5. Just curious how these compare with regards to cost to maintain. I'm thinking particularly about the engine, but am aware that there are other parts that are specific to these cars as opposed to a regular E30 or E34 -- which means extra expense.
The M3 has always been my dream car, but as I get older (and closer to being able to afford one), the M5 is getting more and more appealing.
I would do little in the way of maintenance myself, relying on an independent specialist familar with these engines. The car wouldn't see any track time, and would be a second car.
Thanks.