Extended Maintenance - worthwhile?

[thatrachel]

I have an 'O6 X3 Sport with CPO warranty. I am coming on 50k and am debating if I should purchase the extended maintenance. I had my brakes checked and my rears are like new and the fronts have 3/4 wear left. My engine belt was replaced a few weeks ago as well as my front wiper blades. I guess the main items I would have to worry about are Inspection 2 (which seems to be on average $500-$600) and oil changes/wiper blades. Does it seem worthwhile to spend the $1500 for the extended maintenance or am I better off just paying as I go. My CPO ends in April 2012 so this would give me about 2 years of coverage. TIA!