I just recently had my engine mounts fixed and now I am noticing a bouncing when I accelerate that gradually gets worse especially at 45mph. It seems like my tires are bouncing like a basketball. It's been very snowy out and I have not had my tires rotated since I bought the car. Also, could it be the shocks? Thanks for any help you can provide!

Suggestion: check for bubbles or nails in you tyres as they could cause this problem.

The struts may be bad and/or you have unusual tire wear.