Brake Rotor/Disc

Brake Disc - 4.0L SOHC and 4.6L (3V)
Minimum front brake disc thickness 28.4 mm (1.11 inch)
Minimum rear brake disc thickness 17.4 mm (0.68 inch)
Minimum thickness to machine front brake disc 29 mm (1.14 inch)
Minimum thickness to machine rear brake disc 18 mm (0.71 inch)

Brake Disc - 5.4L
Minimum front brake disc thickness 30.0 mm (1.18 inch)
Minimum thickness to machine front brake disc 30.6 mm (1.20 inch)