Assuming that new pads and rotors will automatically fix the problem will only create more issues.
Replacing rotors on every brake job is not a cost-effective or efficient way to perform brake service. You may save 10 to 15 minutes by not having to use a dial indicator and a micrometer, but your risk of a comeback can dramatically increase.
When applying brakes at highway speeds, the customer my experience pulsation in the brake pedal, steering wheel shake and vibrations in the body. Improperly machined brake discs may cause brake pulsation after several months in service.