Will this diffuser scrape on steep driveways or speed bumps?

Diffuser clearance depends on your vehicle's suspension height and ride angle. Measure the lowest point of your current rear bumper, then physically test-fit or reference forums specific to your setup before committing to installation. Most stock-height applications clear standard driveways without issue.

Is this functional downforce or purely cosmetic?

The Tracer profile adds visual aggression and channels air, but real aerodynamic benefit appears at highway speeds and depends on vehicle speed, suspension geometry, and overall body balance. Think of it as styling-first with secondary airflow management — not a track-focused aero component.

What do I need to do before painting?

Sand the surface with standard automotive-grade sandpaper to scuff the gelcoat, then clean thoroughly with wax and grease remover. From there, apply your chosen primer, basecoat, and clear coat following the paint manufacturer's instructions.