Breakdown Insurance or Extended Service Plan

What is your question?

I'm in the process of buying a 2008 Mini Cooper S with 42,300 or so miles on it. I had a safety check done at a very good garage. I really don't like the local Mini Dealership. And since I'm hearing nightmare stories about timing chains and turbos going. I'm thinking I need some protection. Extended service plans seem like a joke, so I am leaning toward breakdown insurance. The dealer is offering preferred for 3 years for $1,800. But I called and they are reluctant to answer any of my questions,they said timing chains are wear and tear. I don't want to spend the next 3 years fighting with a service plan company.