Boxster S - Approximate Maintenance Cost

[Mike Shiver]

Hi,

I'm looking into buying a Boxster S. I've already test driven one and I like it.
What is the approximate maintenance cost for a Boxster S? I know it depends on driving style, but just approximately.

At what mileage do you change the tires or the breaks? I'm not doing any high performance stuff, just regular daily driving. So I don't need any high performance tires or anything.

Also, I'm going to buy a used Boxster S. Model year is around 2002. How does the mileage correlate to maintenance cost? It seems that many people are doing a 15.000 maintenance interval, so will it matter whether it has 50,000 or 100,000 miles on it?

Any tips on what to look for when buying a used one?

Thank You
Mike