What does it mean if new michelin cross terrains feel kind of bouncy on the road. Is that normal?

Just bought new michelin cross terrain tires for my new toyota sequoia (265/65R17). Alignment is fine, no real vibration in steering wheel or seat. But it almost feels bouncy on some roads, is that the tires or the road. I'm a real picky driver when it comes to balancing and alignments on my vehicle. Just drove home from the dealership and I just want to make sure nothing is wrong. Any help is appreciated, I'm a newby on this site. Thanks