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More data: came back from reputable tech with SSI's and an M and K two into one. Sweet. More on that in another post.
They inspected the entire front suspension and found nothing. Lubricated zercs fitted poly bronze bushings. They found and repaired a spring issue in the ebrake.
Today, 40 degree morning, driving to Birmingham for some nuclear family Christmas time (Mom is 86..Woohoo!) Took the back roads to I-20. I get all the way into Alabama before...you guessed it...droning and shaking commences. 25-30 miles later, all is well. Continues that way to destination. Car sits and cools for 4 hours. Depart for the home 'drome, temps now 65. After 10 minutes (pulling onto I-20 from I-459) presto, here we go again. 30 miles later at highway speeds (65-80) it stops. Smooth as glass at up to 90 and down to zero after.
As a reminder, discs/pads/calipers new or rebuilt, bearings under 10K and greased not wobbly.
I'm starting to think I've got a bad tire. I have tracked and autocrossed these tires. They are two and a half years old and have been in on the car as it sat in an unheated garage with temps occasionally below freezing.
Wouldn't a bent rim ALWAYS vibrate, and not go away? Wouldn't an alignment problem ALWAYS manifest itself?
AAARRRRGGHHH!
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