Will these fit my factory wheel studs without modification?

These are M12x1.5 lugs — they'll thread onto any stud with that pitch. Confirm your vehicle runs M12x1.5 before ordering. If you're unsure, measure your current lug nut or check your service manual.

Do I need to torque these differently than stock lug nuts?

Aluminum and steel lugs torque the same way. Use your vehicle's factory torque spec from the service manual — aluminum doesn't change that number.

What hardware do I need to install these?

You need a socket that fits the 40mm hex head and a torque wrench. The adapter is included. No additional fasteners required.