Nobody wrote:
> I got a new Civic 3 weeks ago and have had various vibration and
> steering wheel shake issues. All of the problems have been corrected
> (mostly by swapping wheels with another car) except one.
>
> The dealer gave me a set of four new wheels from another car which
> seemed great until I rotated them and found a shake (one wheel looked
> like it had an uneven mounting surface). I had them put the good
> pair of the new wheels on the rear and my original rear wheels on the
> front.
>
> All is great except for one thing: When the car sits for 24-48 hours,
> wicked flat spots return on the front wheels (original rear wheels).
> I know it's these wheels because it first happened when the dealer
> put these back on. If you drive it for 40-50 miles, it will go away
> (actually, when I overinflated them and it smoothed out in 4-5
> miles). Let it sit for another 24-48 and it will return. I swear I
> even feel a litte something when it only sits overnight that does go
> away after a few miles of highway driving.
>
> These wheels have nearly 1200 miles on them...will this go away or
> should I push for new tires?
>
> Note that it is 15-20 degrees here in NY pretty much night and day.

I drive my car when it -10 to -15 F with no problems. You've got a new car.
This a dealer problem not yours. Ask them to take care of it.