Question

product knowledge braking systems level 2
surface grooves in brake pads indicate:
rusty or corroded hardware
failed caliper hardware, rotor, and/or hose
improper lubrication
uneven or warped rotor

Explanation:

Surface grooves in brake - pads often occur due to an uneven or warped rotor. When the rotor is uneven or warped, it causes uneven contact with the brake - pads, leading to the formation of grooves. Rusty or corroded hardware typically causes other types of issues like sticking, not grooves. Failed caliper hardware, rotor, and/or hose may lead to more serious braking problems rather than just grooves. Improper lubrication usually affects the movement of components like calipers and pins, not directly cause grooves on brake - pads.

Answer:

Uneven or warped rotor