I've read a lot on the subject but I don't really have a good idea of what I should do so I'm reaching out to the forum for some advice. I've only had my S 85D for 3 months. In that 3 months I've racked up 12,900 miles. I love my car and have done a lot of driving including 2 long trips (1 to SF and back and another to Clovis NM and back). I've also racked up 3 warranty service visit for delivery related items to replacing a camera due to Auto Pilot errors. I talked to my local service center and they tell me that the yearly service is optional and will not affect warranty coverage. They recommend 12,500 miles or 1 year which ever comes first, but they do not enforce it. Now before it's suggested I have been rotating the tires every 6,000 miles using my local tire shop. The yearly service now costs $600 so the cost is a factor if I have to perform it every 3-6 months. Should I go ahead and perform the yearly/ 12,500 mile service early at 3 months? or should I wait until the 6 month or yearly mark?