This just started yesterday.
When driving slow there is a metallic clinking noise and when speed is increased it turns into a scraping noise like sandpaper.
PS how close should the suspension be to the front tires? I looked and they only have like 2-3 inches of clearance
The suspension clearance to tire sounds about correct. Sounds like a brake pad could be wearing uneven, worn down to the back plate of the pad, and that is dragging, or you front wheel bearing is failing. Get over to the dealer and get those items inspected ASAP. What year Flex, tire size, and is it under warranty still?