[thstone]

I don't think that there is an annual minimum mileage. There are a lot of collector cars that are 30 or 40 years old and only have a couple of thousand miles on them and they run just fine.

What is important is to realize that the car will deteriorate from time just like it does from miles; so owners need to keep up the maintenance. What that means is throwing the factory mileage-based maintenance schedule in the trash and creating a time-based plan. Unfortunately, most often this time-based plan has to be created from scratch.

My 911SC is 39 years old and has 182K miles. That's only 4,600 miles per year and it runs and looks great. But I put about $4K into it each year to maintain it (which is well beyond the standard maintenance plan).