I recently changed all the tires of my 996TT, however the car continues on vibrating and stuff, I replace the stock tires ( Pirelli) with the tires that the GT2 uses. The car is balance, aligned and everything...could perhaps something in the suspension be messed up??

 

I would definintely check out the suspension. See if the dampers are leaking or if the springs are cracked/damaged.

Also check out the brake rotor - this could cause a vibration when braking.

 

Thanks for your quick response, I will check on those factors because I have replace the tires already and never had this situation. Its annoying having that loud noise.

 

If it vibrates with new tires you probably have a out of round wheel.

 

The Hunter GSP 9700 might be the way to go for balancing machines.

 

Try this link, it'll tell you where a shop in your area is:

http://128.242.141.111/pub/search/FindGSP9700.cfm

 

It ended up being a front wheel bearing....thanks guys !