I'd say keep the 4.6iS and sell the 540i. Downside is you'd only have one manual. Both have window regulator issues though, correct?

I'm tempted to go see this one, a great color combo and low miles:

https://albuquerque.craigslist.org/c...445604588.html

Would be a fun long day trip for me to check it out. But it makes no sense when I now put less than 2k miles on my X5 per year. Still waiting on my first window regulator and brake job at 18+ years and 43k miles. Hopefully, I didn't just jinx myself for the former. I hear some clicking on both front windows when they're on the way down.