Here is the door clearance, it's about 1mm, though I had to use a spacer to bump it over.
Untitled
Here is how the mounting looks, showing the aftermarket E30 switch.
Sparco QRT seat installed in BMW Z4M Roadster
This is how it looks in the car. Good match for the stock seat imo.
Sparco QRT seat installed in BMW Z4M Roadster
Sparco QRT seat installed in BMW Z4M Roadster
Initial impressions of the seat are very favourable. Very comfortable, nice solid feeling.
The exterior bum of the seat is wide and restricts adjustment positioning. I need to mess with it, but in this configuration - with the stock sliders - I can't drop the back of the seat down beyond the first mounting position (highest). It bumps into the stock rail mount. From my initial driving impressions, I think I might want to drop the rear down 1 or 2 holes, so I will need to experiment with that.
The stock seat belt receptacle location is not a problem, you can see that the seat does not interfere with it in a way that would change the seat belt position.
I knew I would end up doing this at least twice to get the seating position right, as well as install the harness. I will make a better write up second time around.
Cheers,
Eamonn