Very nice car, I once took one for a test drive. I was tempted but decided against it. At the time I was doing thousands of km per month for work and I didn't want to destroy a classic doing that.
It was fast but not brutal. Fairly noisy and very mechanical, i.e. you are not as isolated from the things that happen underneath you as you are in a modern car. An interesting thing about it is that the water temperature gauge actually works. As you drive around, it goes over the halfway mark, comes down, goes back up etc. Not like a modern BMW that goes up to the halfway mark and stays there.
The not so nice, kinda sad thing about a 6-series in SA is that there was a a facelift in mid '82. The dash became somewhat nicer. The rear bumper wrapped all the way round to the wheel arches. A whole lot of mechanical upgrades, including ABS, also went with this change. It happened because the 5-series (the daddy of the 6) evolved from E12 to E28, I think. Unfortunately, BMW SA stopped importing the 6 when this happened, so (almost) all the cars you see here are the pre-facelift ones.
Pity about the wheels on this one. He does have an excuse. The original wheels were metric sized and fitted with Michelin TRX tyres. Getting tyres in the very weird size of 220/55R390 must be quite a mission now. :RedNo:
Here is a picture of the facelift model, with original TRX wheels and tyres.