Worried: big tank above garage..need ideas

[kaboom]

Cannot install telepost because it would be in the way of where I open the car door.

[Delphinus]

What about two teleposts on the sides of the garage so you can still park inside, and a metal I-beam spanning the distance? (Apologies if this was already suggested, I only just saw the last 2-3 posts here..)

[fkshiu]

Sistering with 2x12s adds strength without eating any groundspace.