Car

Thanks I means it was working good for couple of days but this just started doing it

Rotors are made so thin these days not worth resurfacing may shake worse just replace both rotors. The price on rotors are very reasonable and worth just replacing.

Check out the kits you can get with rotors and pads on Amazon. There are really good deals. Make sure all the mounting bolts for the calipers are tight and check the wheel lug nuts too.

Ok what I! Its the back breaks with the brums

First of all make sure the the wheel lugs are tight.

I agree. Sounds like a loose wheel to me.