highkm

Has anyone encountered a problem on an Accord 2003 or newer where they
could not get the vibrations out from the front end. I recently
purchased a new set of tires Toyo Versado LX. I had them balanced
several times including rode force balanced under the assumption that
the tire balance is causing the steering wheel to wobble as soon as
one gets above 90 km/h. If I cruise at 100Km/h it shakes but after a
while the shake stops but then several minutes later it starts again.
The vibrations reduce as you increase the speed. It is not too bad at
140Km/h. It is absolutely horrible at 170km/h (not near any population
or drivers near me). I assumed that the problem was the brakes so I
serviced them by completely disassembling the front and the rear
calipers. Needles to say they were partially responsible for the
shaking during the starts from 0 Km/h. The brake pistons had a lot of
varnish, rust and dark grey fluid. I was surprised since I bled them
every 50,000Km (I have over 325,000Km - 2003 Accord 4 cyl). I also
have new front and rear disks, so I am sure they are not warped i.e.
the whole barking system now works as good as when the car was new. I
also rotated the tires to see if the vibrations start at different
speed. It had no effect. I went to the dealer for inspection. They
claim there's nothing wrong with the suspension i.e. struts are OK,
joints are OK. Everything is still tight. Some dealerships are
suggesting that I replace the half-shafts. However they could not
claim with high degree of certainty that it is the shafts. I am
planning to put my winter tires on to see if the car shakes with them.
I know that it did not the last spring prior to taking them off. Any
ideas or experience with this kind of situation?

thanks.