Will these work with my factory wheels and studs?

These are standard M12x1.5 metric lug nuts — they'll thread onto any M12x1.5 stud. Verify your vehicle uses this thread size before ordering. If you're unsure, check your existing lug nuts or consult your service manual.

Do I need to prep or treat these before installation?

Aluminum lug nuts are ready to install as-is. Hand-tighten them first, then use a torque wrench set to your vehicle's factory specification (found in your service manual). Avoid over-tightening, which can strip the aluminum threads.

Can I use these with aftermarket wheels that have a different bolt pattern?

Thread size and bolt pattern are separate — M12x1.5 refers only to the stud threading. Your wheel must physically fit your vehicle's hub. If you're running custom wheels, confirm they accept M12x1.5 fasteners before purchase.