vibration at around 80mph

[Timco]

Mine was a bent rim.

[Sassmatt72]

I had the same 68-84mph shutter or vibration.

Mine on 98 box 8+year old tires!!!!
so I thought that...

But when re-installing my inner tie-rods I noticed one was spinning eccentrically as i threaded it in... I swapped it out for a new used one my pal had.& short test drive later

bingo, gone, and I have yet to Align it.

(I will just need a few more parts in hand before I dive in)

I can't wait, new tires, fixed bend parts, ...
now as soon as I get an alignment I can "give her the beans again"

[Blackcloud]

If you have taped on wheel weights, sometimes they shift, or even come off. That would give you vibration too. Get them balanced.