Grinding noise with brake use

[yarista]

Hi Yaris peeps,

I am having a small issue with my 07 Yaris. It's a grinding noise that seems to start when I brake on a down hill that has a turn. It goes away and seems to happen mostly in the morning. But sometimes it happens later in the day. I replaced both front and rear brakes a short time ago. It had the noise before I replaced them. The brakes work fine and stop well. The car has 85,000 mi on it. I didn't notice any problems with the brakes when I replaced them other that a frozen front caliper slide which I freed and greased well. I replaced the front rotors but not the rear drums. The drums didn't have any score marks as the the shoes still had some lining left. So I am a bit out of answers. Any Ideas Thanks