Do these require drilling into my fenders?

No. These inserts bolt to existing factory mounting points on the fender. Verify your OEM hole locations match before final installation to ensure clean alignment with zero modifications.

What prep work is needed before painting?

Sand the surface thoroughly and clean away all dust. Apply your chosen base coat and clear coat system directly after prep — no additional primer is required since the surface ships ready to accept paint.

Will these affect tire clearance?

The Aero Blade profile extends outward from the fender. Verify your tire size and suspension setup against the insert dimensions to confirm adequate clearance before installation. Wide or lowered setups may require verification.