[MikesBMW]

Has anyone here proactively had the water pump swapped out? I hear they go bad between 60-80k miles. I'm already at 85k. Most are highway miles, but wondering if I should replace before my car shuts down on the highway do to a pump failure causing me to totally disrupt that day(s).

What should I expect to pay for this at the dealer?

Also, I still have the original battery in the car, should I have that changed too? Almost 7 years old now. What will that cost at the dealer?

And are spark plugs really needed every 40k miles in the 335i? If I'm doing mainly highway, can I get 60K+ miles out of the spark plugs?