Will this interfere with the bumper cover when it's installed?

No. The lip mounts to the existing bumper mounting points and sits below the cover line. Once bonded and cured, it integrates flush with the lower bumper surface — no cutouts or modifications to the OEM cover required.

What's the best way to secure this to the bumper — adhesive or drill-through?

Both methods work depending on your preference. Adhesive offers a cleaner install with no visible fasteners; drill-through provides maximum hold and is easier to service later. Prepare the mounting surface with a light sand and cleaner before applying your chosen method.

How does this perform at highway speeds?

FRP lips are designed to stay rigid under typical driving conditions. At speed, wind pressure pushes the lip downward into the bumper — which actually adds stability. Ensure all mounting points are secure before highway driving to prevent vibration or movement.