Tires, new Nitto Motivos..problems

hsb

I was looking for a tire that would offer good performance that would be usable in colder weather too, Illinois has long cold season. Called the dealer and was interested in goodyear eagle as they worked good on my bmw but they insisted that the motivo was a much better tire and that they had installed them on a few z's with no complaints. So I went with it. I will try another alignment, but I am concerned that this tire is the problem, as I have never had a car pull left on acceleration and then right on deceleration...I guess I need suggestion on what tires to replace these with too, even if it is not all season, thx