The vibration is probably from when a car sits a week or two they get flat spotted. You only feel it sometimes because they correct themselves and round out on the freeway. If you drive it the next day no vibration.
Good Idea, next time I'll watch you guys on the shitter! Anyway, I'm the son who takes care of my late dad's 2003 SL 500. Like your channel! I only take this out ever 2-3 months to keep things moving, any advice on the care of this car? my dad loved it. It has 59k km, we are Canadian, and it's never been driven in the winters that I know. Cheers guys.