front shacking at 55-70 mph ,balance problem? help...

[bosanci28]

hi,

i am trying to find out my problem with the wheel steering shacking at 55-70 miles per hour! the wheel steering goes little left and right when driving at that speed!,

so

here is the story again,:

i did about 2 weeks ago buy new tire from a shop ,they install the new tires and balanced them,few days later did the alignment (somewhere else) and after few days driving here and there at 55 up the wheel steering have a play in my hand right and left...
so i went back to the place that put my tires and did the balance,and they check it again and they told me that ya the balance was not good in front ,
and also this time they said that my rim in driver side rear is bent, and i am like "what?" last time they did not told me that..what is this? ,i did not hit anything in those 2 weeks ,and why they did not found that the first time when they did the balance!?

now today i feel again the same problem with the shacking ,in front ,but i did not have this problem when i had the old tires!!!,

can some one tell me maybe the wights from the balancing failed down maybe? or is coming from the rear? because of that bent rim?,this just cant happen within 2 weeks!,bending that rim...

can anyone have a idea what should i do?

thanks,