i have a 2005 extd cab silverado and added 22" rims on Falken 305/40/22 tires. whenever i brake, the front tires start to rumble and my truck starts to shake. the tires have been rebalanced numerous times, does anyone know what could be the problem?

 

sounds like warped brake rotors to me

 

Yeah I am running 18's in the front and 20's in the rear and just had to replace my warped rotors with a performance rotor. The truck use to shake everytime I hit the brakes. You may not be able to see the damage on the rotor from the front, check the back of the rotor as well for any scuffs or dipps.