wv2007edge

I have a 2007 Ford Edge SEL Plus. Just recently got new tires, brakes check out fine. However, prior to putting on new tires the Edge started to have a vibration in it. The vibration only come about when the vehicle is accelerated hard or just stronger than usual. I can't figure it out ive checked everything out and everything seems fine. Just wanted to post and get some opinions. Will be taking to dealership soon to get checked out. Just wondering if someone out there had some ideas.