Hey.
I've driven the X5 over 3000km (1864,11358 miles) this summer, and now I really hate the sport seats... I can't adjust them to fit me correctly, because the back rest is too flat. And I won't miss sliding from side to side between the side bolsters either.
I'm looking for comfort seats from E46/E53, but I haven't ever sat in one. I have tried the E39 comfort seats, and they are good. But after searching, I understand that they're not exactly bolt on

I didn't find a single page or article about anyone fitting E38/E39 seats in E53/E46. Just a bunch of posts saying that it's a no-go.
For those of you who have tried both:
How do the E46/E53 comfort seats compare to the E39 comfort seats? In terms of... comfort...
If they're rubbish compared to the E39 ones, I might just have to get a pair of E39 seats, a couple of wiring diagrams and some steel to make adapter brackets.