I think my car had a slight balance and alignment issue, becuase it pulled a little to the right, and at highway speeds I could tell the passenger front didn't feel balanced. However, since yesterday the car rattles really badly as I drive. The steering wheel virates, and there is s thumbing sound. The thubing speeds up as the car speeds up. The thump coordinates with the virbating of the steering wheel. Last night I was sliding around in an icy parking lot. I see a relationship between that and the new situation with my car. I never hit a dry patch while sliding though. So, any thoughts?

Thanks