Will this diffuser scrape on steep driveways or speed bumps?

The SM-G design follows the OEM rear bumper line closely, so ground clearance matches your vehicle's factory setup. If your bumper clears a surface, the diffuser will too. Verify your ride height before installation if you've made suspension adjustments.

Does this affect my rear exhaust tips or sensors?

The diffuser is designed to work with stock bumper configurations. Verify that your exhaust tip placement and any parking sensors align with the diffuser profile before final installation. Minor trimming of the diffuser around existing hardware may be necessary.

Is this purely cosmetic or does it add downforce?

The SM-G diffuser is a styling enhancement that complements the rear bumper profile. At street speeds, aerodynamic gains are minimal. It's designed for visual impact and a refined appearance, not track-level performance.