I have an 06 530 with standard seats and NO heat. How hard is it to change them to either sport or comfort? I see lots of posts with heat but how about without?

Comfort or sport seats usually are heated, even though you can still retrofit it in your car, but the heating wirining will not be connected so it will not be operated, I already did it in my 525i and it works fine. :thumbsup:

mwaly...what about the side support, do they open up and return when you open the door,,,, also what about the passenger seat, the normal electric seats dont have memory for passenger if you fit comfort do the memory in the passenger seat work, normally,,,

did you do the seats yourself? Any reprogramming?