If you’ve been hearing a grinding, squealing or scraping sound coming from the front end of your 4th generation (2016, 2017, 2018, 2019 & 2020) Kia Optima when you step on the brake pedal, you probably need to change the front brake pads. Check out my DIY tutorial for the procedure (with the compatible replacement part numbers) by clicking on the text link or thumbnail image below.