Will this diffuser scrape on steep driveways or parking lot inclines?

Rear diffusers sit low and are designed for show use or smooth road surfaces. Before purchase, measure your current vehicle's rear ground clearance on your typical commute routes and at your parking spots. If you regularly approach steep angles, verify clearance manually with the OEM bumper first — this panel will extend that footprint.

Is this functional downforce or cosmetic only?

This is styling-focused. It adds visual aggression and depth to the rear quarter, but does not generate measurable aerodynamic downforce at street speeds. Install it for the look, not for track performance.

How do I protect the clear coat from road salt and debris?

Wash the panel regularly with car soap and a soft brush — avoid pressure washers on the weave. Wax the diffuser every 3–4 months to maintain the clear coat's water beading and UV resistance. The clear coat protects the carbon underneath, so keeping it clean extends the finish life significantly.