[ColdNoMore]

Originally Posted by retiredguy123

Replacing the rotors as part of a brake job is not unusual. When labor was cheap, they used to remove the rotors and turn them down. But now, if the rotors are warped, new ones are the best way to go. There is no way the Kia dealer could determine the condition of the rotors without looking at them. Mileage is not a good indicator because heavy braking can wear out brakes fast. Based on the information provided, I am not sure they were trying to rip you off.

Not unusual to be told that rotors are "warped" and need 'trued,' but almost always...unnecessary.

Brake Rotor Warp Myth Debunked (poke here)

3. Brake Rotors Warp

FALSE.

Rotors don’t warp.

Back in the 1970s, in what was probably a scene right out of the movie Dazed and Confused, someone came up with a theory about brake-rotor “warping,” and it totally stuck. Why? Probably because, in layman’s terms, it makes sense.

But then real life happens and this faulty explanation doesn’t hold up to scientific scrutiny.

What is often described as “warping” is actually the presence of two separate phenomena that can happen in isolation or in combination with each other, and neither has anything to do with warping.

These phenomena are:

Brake torque variation (BTV), and
Disc thickness variation (DTV)

And some more...

Warped' Rotors Myth - Correctly Service Brakes: Runout, Disc Thickness

Raybestos Brake Tech School, Part One: Rotors Don't Warp | Hendon Publishing