I have owned my '06 since new and now have 37K on it. I bought the 7 year warranty. The 2 expensive and potentially problematic things on the bike are not covered by the contract. Clutch at around $1400 for parts and shocks at $4000 (ESA). The item worth the warranty is the ABS unit, although reported issues have been relatively few. My clutch was replaced under factory warranty at 11000 miles and a dragging front caliper and a heated grip are the only other warranty repairs. I have an Akrapovic full titanium Evo exhaust and Power Commander 3 with a custom tune. Other than BMW themselves, I have loved this bike. It's an awesome machine.