Welcome to the club.

Couple of things
1 - that photo immediately above seems to show an extreme amount of negative camber on the right rear wheel. Is that due to something you know about? Optical illusion? Do you have excessive tire wear on the inside edges of the rear wheels? If so, that is a common issue, although usually at higher mileage than you've got.

2 - just a thought for something to check on the steering wheel vibration. Intermittent vibrations are always tough to track down, so it might be worth checking ... The u-joint in the steering column can get a little weird on these trucks. Something like a $500 part to replace if needed. But in my case, I had some looseness in the steering and it turned out it was just that the u-joint was a little loose on the column there. I just had to loosen it (not remove), carefully center it, and re-tighten the set screws with loctite. Before doing that, I could visually see the u-joint was loose by having my son wiggle the steering wheel while I looked at the joint to see what was moving. Perfectly tight afterwards, and I keep it well greased since they do eventually wear out.

BTW, nice 911, I've got a 1985 cabriolet garage queen.

And hey, are you sure that photo was taken in Philly? I grew up in Allentown, and I don't think I ever saw blue sky in the summer months. 90+ degrees, 95+% humidity, overcast, every day ... doesn't get any better than this. Luckily I did not know any better at the time. Maybe I was just in the wrong part of town.

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2001 X5 3.0i, 203k miles, AT, owned since 2014