Do these fenders require special fasteners or hardware to mount?

Hardware is not included. Verify mounting hole locations on your vehicle's existing fender before securing. Most installations use bolt-on or adhesive methods — reference your vehicle's service manual for OEM hole spacing and fastener specifications.

What kind of surface prep should I do before painting?

Sand the surface with appropriate grit to scuff the finish, then wipe clean of all dust. Apply your chosen primer and topcoat system per the paint manufacturer's instructions. Proper adhesion begins with a clean, stable surface.

Will these fit over my stock wheels, or do I need a tire size adjustment?

The 30mm extension adds modest width to the front quarter. Verify tire and wheel fitment by measuring your current setup against the new fender line. If you're running aggressive offset or wide rubber, check clearance by hand before final installation.