Do these fenders require fasteners to bolt on?

Yes. These panels mount using factory fender holes and studs. Verify your vehicle's OEM attachment points before ordering to confirm compatibility with your specific setup. Standard automotive fasteners are typically required but vary by install method.

What should I do to prepare the surface before painting?

Sand and prep the surface with standard automotive abrasive before applying your chosen base coat and clear. This ensures proper paint adhesion and finish quality. Follow your paint manufacturer's surface prep guidelines for best results.

Will these affect my tire clearance or suspension geometry?

These are over-fenders that extend outward. Check your current wheel and tire width against the 30MM extension to ensure no rubbing during full lock or suspension compression. Test fit or measure before final installation if running wider aftermarket wheels.