Here's a list of known problems and solutions by owners, hope it's helpful for current and future M5 F10 buyers.
- Problem: Clunking / loose noise from rear on bad roads
Reason: Confirmed factory defect spring coils.
Solution: BMW releasing replacement spring coils in December 2012
Reported by: singularity
- Problem: Wind rattle/fan rattle sound when car is under throttle
Reason: Loose pipe clip on induction system
Reported by: burns all, singularity
- Problem: Brakes pedal becomes very soft after a few minutes of stress driving. Beware of increased brake distance.
Reason: Bad factory brakes. Choose ceramic brakes or don't race for longer than a few minutes.
Reported by: singularity
- Problem: "Drivetrain error. Maximum power not available"
Reason: Legacy flaw in fuel pressure sensor / high pressure fuel pump.
Solution: Possibly fixed on cars produced after February 2012.
Reported by: phish_100, singularity
- Problem: Brake system failure/Tyre pressure sensor failure/Driving Stability Control failure
Reason: Brake pad sensor failure
Reported by: phish_100, singularity
Sorry for my bad english, gonne edit topic as more people report solutions. Hope it helps.