I've asked around and read a lost of posts about purchasing extended maintenance + warranty. Came out with this conclusion: Ext warranty - purchase for peace of mind. Ext maintenance - not worth it unless you need 2 brake jobs in 2 years. My dealer offered 2 different ext warranty options: BMW platinum Plus - ~ 4700 6 yrs or 100K (From original in service date) Premier plus vehicle service contract (3rd party warranty) - ~ 3800 6 yrs of 100K (from date of purchase of warranty) with $0 deductible. Has anyone had any experience with this particular 3rd party warranty company. Seems like a good deal - would extend my warranty close to 150K miles and 12 years (if bought right when factory warranty expires) Would you prefer factory warranty vs 3rd party warranty? ------------ Most folks report ext maintenance is not worth it unless you drive aggressively and need both front and rear brake/rotors replaced. At most, you'd break even. I have DHP in my car. Can anyone comment on maintenance costs with DHP installed? Would there be more maintenance with DHP? Are parts more expensive with DHP?