Your rotors on the front are warped replace the rotors and break pads ane it will be fine
The minimum thickness for a 1998 Chevy Tahoe's rotors is 30mm. Rotors must be replace when they fall below this thickness due to reduced braking power.
36mm
14mm
6 3/4"
11.5 inches. They are not interchangeable with Twin Cam brake rotors, nor are front and rear '93 rotors interchangeable with each other.
Get you front end aligned, that should take care of the shakes.
Rotors on the front drums on the rear.
front 6.5 , rear 8
6 3/4 oversize 6.5 in the front door
You will find that the front brake rotors are located behind the front of your wheel spindle, (behind your wheel and brakes). There you will see the rotors.
Front rotors on Citroen relay are always replaced in pairs.