Strange vibration when braking

[da_no1]

Hello guys!

About a month ago my car has a strange vibration at the pedal when braking. At the weekend i put on the summer tires and the vibration get much stronger. It's coming from the back, becasuse if i put the handbrake on when running, it does the same. The brake pedal feels like when you hit the brake hard in a car with abs.(i don't have abs...) It has drums on the back. What could cause this problem? I think it might be wheel bearing, because it has a sound as well but i'm not sure. When a i jack the car up, the wheel runs fine and there is no tipical bad bearing sound.

[Eeyore]

warped brake disc? Brake disc not mounted properly? wheel bolts not done up tight?

[da_no1]

warped brake disc? Brake  disc not mounted properly? wheel bolts not done up tight?

I have drum brakes. Wheel bolts are ok, i double checked them.
I thought about worn drums or shoes, but this strong vibration came at the first drive with the summer tires.

[daddyfixit]

if you drive along slowly, press h/brake button in and pull handbrake on slowly-----if the car does the wobbly/vibration bit then it needs a pair of brake drums.

[da_no1]

if you drive along slowly, press h/brake button in and pull handbrake on slowly-----if the car does the wobbly/vibration bit then it needs a pair of brake drums.

It does when i pull the handbrake, but not at low speed. It vibrates when braking from over about 45mph.