powersurge said:
My first question would be if you are using the original rims and tires... If you got larger rims or tires, you can get rubbing.
Also, there are some strange situations where you a driving, turning, in bumps or changes in pavement that will make the suspension move in ways that is typically does not..
I would not worry or further investigate.
If you can test turning right and left (in a flat parking lot) from a full stop to about 10 MPH, then you are ok..
All stock equipment- SL with 215/50R17 tires.
The driveway entrance where mine was observed is designed for commercial over-the-road buses that have relatively poor underbody clearance. So doubt it’s an angle of approach or body-suspension twisting event due to changing road grades.
The sound reminds me of rolling up onto a parking space curb. Just a quick light plastic scrape like when I had a Honda Civic frequently scuffed the small front air dam.