Do these flares need paint before installation?

No. The textured finish ships ready to bolt on as-is. If you want to match your truck's color, prep with 120-grit sandpaper, apply primer, and paint; otherwise, install them textured and they'll blend fine with factory panels.

Will these fit over my current wheels without trimming?

These are designed to clear moderately wider wheels and tires. If your setup is significantly wider than stock, test-fit before final fastening to confirm your specific tire and wheel combo clears the inner edge.

What hardware do I need to install them?

Mounting hardware is not included in this set. Fasteners and brackets for your factory attachment points should be sourced separately or verified against your truck's service manual to ensure correct spec and torque values.