With all the good weather recently, I've had the windows open a lot at low speed. When driving over uneven roads, speed bumps and parking, I can hear a clonking / rattle noise coming from what I think is the front suspension. Now that I've heard it, I notice it during all slow driving around town at sub-20mph speeds! It's not the click you get from the S-Tronic, it's more "hollow" and substantial than that - and definitely related to suspension movement. I'm covered under warranty for any problems, but would really rather this wasn't true! Any experiences or recommendations?