Hi, I think you test drove a Sienna with bad tires. My 2004 Sienna LE has one of the smoothest rides. I use Michelin tires and keep them rotated at 5k intervals. I'm sorry that your first test drive in a Sienna wasn't a good one. Trust me, you will love the Sienna. I purchased the factory extended warranty and I'm glad I did. One of my door lock motors quit working on a sliding door and it would have cost over $600 to replace. Extended warranty covered it completely. Good luck finding a good used Sienna.