Good luck. Keep us posted

 

I just had new tires (PS2) installed and an alignment.
Car feels good on straights high and low speed. However I have what seams to be the same or similar problem in that at high speeds in slow sweeping corners the car seems to wiggle as you have stated. I have a totally stock car and it did not do this before but the tires I had before were very cupped so I am not sure if that some how compensated (masked) this issue or if this is all due to a change in the alignment. I will post my pre and post alignment numbers and would love to hear any comments.

 

Here are the numbers

 

Any toe out at the front will make the car wander.

 

Yep, you absolutely don't want toe-out in
the front or rear, not for street/freeway.

Your numbers are here seem fine as they
are within spec. (A little toe-in at both
ends).

As such, my first suspicion is corner balance
being off, especially with you in it. If your
cross-weights are off, the left front and
right rear are taking more of the load, so
the car can teeter between the left rear
and right front. (or the other way). Think
of sitting on a bar stool with four legs, and
two of the legs at opposite corners are a
little taller. (And actually it only takes one
corner being taller or shorter to get this effect).

When/if you get your corner-balance checked,
if you have adjustable-length arms on your
sway bars (one per bar is enough), make sure
the tech disconnects one end of each bar
while doing the corner weights (with you in
the car), and when the cross-weights are equal,
then re-attach the bar ends, adjusting the
length so there's no preload in the bar at that
weight distribution. (just to be perfect as it
is).
Joe