The 3-ply Toyo tires have about 27k on them.
The shake is a seat-of-the-pants sort of thing - i.e. it's not coming through
the steering wheel at all.
It also comes and goes. Maxes out at about 70 mph. Sometimes smooths out at
75. And, stangly enough, if I drop down to 65 it goes away and if I sort of
sneak back up on 70 1 mph at a time, sometimes it will stay away for awhile.
Right now, I'm just cruising at 65 to keep it at bay.
My kneejerk reaction would be to get the wheels balanced - but that's going to
cost a few bucks....and with 27k on those tires, I don't think they have more
than 15k left in them (performance-wise, not tread-wise).
So, the second thought is to just get a new set of tires and see if the shake
OTOH, with 110k miles on this thing I'm wondering if it's worth having the drive
train looked at.