I don't know the details but you may have a bent axle.
If you only did the front brakes, the problem may be in the rear brakes.
Were the rotors resurfaced or replaced, or just the pads? Warped rotors are the most common cause of vibration when braking
your brake rotors are warped. You should repalce you brake pads and have the rotors resurfaced if possible, or replaced.
Rotors or drums warped. Have them turned.
You have warped brake rotors. Replacement or machine work is required to stop that condition.
Because the front rotors are warped. You might want to replace the rotors or resurface it.
The most likely problem is warped rotors. Have rotors turned or replaced. Replace front brake pads.
You have badly worn brake pads or rotors or both. I would get them fixed ASAP.
I would suspect the lug nuts were not torqued to the correct specs and that has warped the rotors. Over-tightening the lug nuts will warp the rotors. Can also be worn suspension parts.
Check pLugs and wires and the vibration my be from brake pads or warped rotors
A frozen brake caliper or if you just instaled new brakes and rotors you might have oil on the rotors as they need to be clean before installing.
Hey Marques==Either the rotors or the durms or both need to be turned. Goodluck Joe