Will these lug nuts work with my current wheels?

These are M12 x 1.25 — verify your vehicle uses this thread spec before ordering. Check your existing lug nuts or service manual for confirmation.

What's the advantage of the grooved shank?

The grooves prevent metal-to-metal seizing, especially in wet climates. You'll have an easier time removing them later without stripping or rounding.

Do I need to apply any coating or treatment before use?

Aluminum can oxidize over time. A light coat of anti-seize or wheel grease applied to the shank before installation extends the life and keeps removal smooth.