My X3 with sports seats has done 1,600 miles, the front passenger seat (about 800 miles use) looks like it's done 60,000miles. The main central area of leather on the seat squab developed a light crease very early on and has stretched such the the leather is not a tight fit, it looks like a seat from a much older car now. It's not really terrible.....yet...but it isn't right, it looks more pronounced in real life than in the pic. The left support bolster isn't great either. What remedial action is the dealer likely to take? Is there a crafty way to tighten the leather or will they need to have a specialist re-trim the seat?
Edit: I should add that this is my 4th BMW in a row with leather sports seats. None of the previous cars had this much stretching of the leather after 3 years. Maybe a coincidence but the dealer had to "de-creak" that seat, they used silicon lube on the springs, I wonder if the squab interior is not sitting correctly.