What could be causing the poor ride quality of my car?

My car is a 2012 Honda Civic sedan. I recently got all new tires(Falken Ziex ze950 a/s) put on it. After the first day of driving it I noticed it driving a little strange, and at first I thought they just need broken in. After a few days though it started to feel more like there was possibly an issue. Driving it, especially at around 40mph or so, it feels like there is a slight "wobble" in the tires. I took it and had it aligned, and the tire shop balanced them when they put the tires on. After the alignment it felt a little better but still not how I thought it should. I checked the tire pressure and found that the front driver tire had about 15 more pounds of air than the front passenger. I adjusted all of the tires air pressure to the factory specs. At first it felt a lot better, but along the 15 mile drive home I noticed it still didn t feel quit right. Is this just me being paranoid? Or is the ride quality of these new tires just poor? My previous tires were the Goodyear Eagle RS-A, and I never had one issue before I changed tires

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