Strange noise after track&balance

daywalker

I had the tracking & balance down on my car recently, and since I had it done, i've had a strange noise come from my rear left wheel well, if i'm going over a rough road, I sometimes hear a rumbling noise like if I had something rattling on a hard surface. I did notice that the garage have added extra weights to the wheel rim (could it now be out of balance totally, instead of balanced?). I'm going to bring it back to the garage after the bank holiday, but I was just wondering would anyone know what it might be?
Thanks

Syllabus

is the wheel loose?

ljpg

sounds to me like somethings loose,cud even be the wheel,check the wheel nuts first of all,if there tight its probably something else related to the setting of the tracking

franksm

They may have nudged the shield around the back of the disc - this can trap dirt, stones, and may rub against bits of rust on the edge of the disc.

Easily fixed, just pull it away from the disc with your fingers, a little.

Hope that's it. Otherwise you might want to drop over to the mechanic again.

daywalker

I have checked the wheel, I even took off both back wheels, and checked the shield behind the brake disc, it wasn't loose/warped afaik nor could I see any debris there, then when I put on the wheels, I made sure the nuts were on tight. (without over-tightening of course). Looking at everything it seems ok, but I'm no expert, I have noticed that there are a number of shiny pieces of metal added to each wheel (extra weight I assume?).
I'll be bringing it into the garage tomorrow anyway.

Nissan doctor

What car is it? Could they have left the rear alignment adjustment bolts/nuts loose?

daywalker

Had it in the garage this morning, it was discovered to be nothing to do with the wheel/braking area, but the bushing for the left rear trailing arm had failed, and the arm was banging against the body of the car when going over bumps.
thanks for all the suggestions.