not sure if this is teh case with all the cars

but with mine, when i brake and change gears, the car shakes abit, i feel in on my hand (the one that is holding the wheel)

maybe because i am downshifting to early?

 

Shaking during acceleration or during braking you never really said. But going off your title I will assume during braking.

It is usually caused by warped rotors or an "uneven" braking...check all components and get your rotors turned or replaced.

 

yup, maybe have you tires re-balanced too

 

yeah ive heard that if u feel it in the wheel chances are its the front rotors that are warped and if u feel it in the pedal the rear rotors are warped or the drums are warped depending on your setup.

 

that is usually a sign of warped rotors. You can get them resurfaced to get the smooth stop back.