My car is making a scraping sound in the wheel area. The brakes are 3 mo. old?
If your brakes still have enough life in them the issue might be the wheel bearings. Have them checked and replaced if bad.
The thin metal part behind the disc may also be touching it. It's there to protect other parts from brake dust and to protects disc from what could touch or splash on it. Just remove the wheel and look behind the disc. If it's your case, just put on gloves and bend this metal part with your hands. It's pliable.
Search Nissan Sentra Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Nissan Sentra Experts