vibrate when brake

I have a 2002 Camry w/ 50000 miles. Recently, when I drive like around 65-75 mph and hard brake, I felt vibration on my steering wheels and the front seats....can someone tell me what's going on and what should I do w/ my car??
Thank you!

same thing happened to mine, got a wheel balance and alignment, all gone

Thank you.
So you don't think is the problem w/ the rotor right??
How often do I need to do alignment???

-Gun

it might be the rotor too...have u resurface or reture the rotor....u should get alignment check every 6000 miles or every 6 months

Thank you!

How often do I need to chang the rotor anyway??
I dont' want to bring it to the shop cause I'm afraid they will say I need to change the rotor even when i don't need to....

-gun

It is the front rotors, you can machine the surfaces, or replace them. You might as well replace them. Most shops now a days dont machine rotors they just replace. The shop where I work is the only shop around that I know machines rotors. There really isnt a set amount of miles you need to replace your rotors, just keep checking them. I usually tell people about every other oil change to check the pad and rotor thickness. The brake pads where faster then the rotors and I do NOT recommend replacing pads without machining or replacing rotors. Just take it to the shop and bite the bullet and get a brake job. Best advice I can give you.

-Jason

just do the brake job your self its not all that hard.

  Front rotors warped, probably does it worse when hot right?  Before having them turned make sure they are not warped.  If you live by the ocean make sure that the inner vent area between the turned surfaces are not rusted/flaking, I have noted more tendency for warpage when that is noticed.