That grinding sound almost always means your brake pad wear indicator is hitting the rotor - the little metal tab built into the pad that's supposed to warn you before the pad material completely wears away. At 8k miles, something's definitely off, and it could be a combination of factors like aggressive braking habits, a manufacturing defect in those pads, or even a stuck caliper that's wearing one pad way faster than the other.
Before you assume it's just normal and keep driving, get under there and check if both front pads are wearing evenly - I've seen folks drive around thinking they're fine when really one side is barely there and the other still has material, which usually points to a caliper issue that'll get expensive if you ignore it long enough.