Will these work on my factory wheels without modifications?

Yes. M12 x 1.5 is the standard thread size for most modern vehicles, and the tapered seat design seats directly into factory lug holes. No drilling or wheel modifications needed.

Do I need to torque these differently than my original lug nuts?

Refer to your vehicle's service manual for the correct torque specification. Aluminum nuts seat the same way as steel, but always use a calibrated torque wrench to avoid over-tightening.

Are these treated for corrosion resistance?

The gun metal finish provides a protective layer. For maximum longevity in wet climates, periodic cleaning and inspection of the seat area will prevent corrosion buildup.