Will this diffuser scrape on driveway approach angles or speed bumps?

The M Performance profile is designed to follow OEM bumper geometry, so approach angle remains the same as factory. Verify clearance against your existing rear bumper before installation to confirm fitment with any suspension modifications.

Is this functional downforce or purely cosmetic?

This diffuser matches M Performance styling and geometry. Real aerodynamic benefit depends on vehicle speed, suspension setup, and driving conditions. It functions as designed when properly installed at the OEM mounting points.

What finish prep should I do before installation?

Carbon fiber arrives with protective clear coat applied. Sand and clean the mounting surface and fastener holes before bolting down. The clear coat should be maintained with regular wash and wax to preserve appearance and protect against UV exposure.