I recently had some 18's and some old guy rand into my car, my rims were crap and my tires were looking good so I figured id buy some new rims and put the same tires back on because I only had then for about 6 months. I got them mounted and the local shop had claimed that the tire was warped and that I would have some vibration.

The first night my lug nuts came loose and once I tighten them up the car vibes went away. Now when i hit around 50 mph it vibes and if I don’t accelerate at all the vibe is worse. Also when I do accelerate its fine. Is it possible to have this issue or is this shop just trying to get some extra bread. I’m thinking they didn’t balance the wheel properly or something.