*M Performance parts carry the New Vehicle Limited Warranty if they were installed prior to delivery to the client. If the installation is made after the retail sale of the vehicle, the accessory will be warranted for the balance of the New Vehicle Limited Warranty period or two years from its date of installation, whichever is greater.
I'm sure this carries over on extended BMW warranties too...so the extra cost of keeping warranty is worth IMO.
2012 335i Mineral Gray
M Performance Whore: PPK|Exhaust|Brakes|Performance Suspension Struts & Springs|Black Kidney Grilles|CF Spoiler and Mirror Caps|M Sport 400M|BMWF30.com