Do these work with my factory wheel studs?

Yes, as long as your vehicle has M12x1.5 studs, these threads will match. The extended shank is designed for aftermarket wheels with deeper lug pockets — verify your wheel seat depth before purchase.

Will the open end design cause the cap to loosen while driving?

The rib shank grip locks onto the stud and prevents rotation. Once torqued properly, the open-end cap stays seated. Tighten to your vehicle's factory spec — check your service manual for the correct torque value.

Can I mix these with my existing lug nuts?

You can, but it's better practice to replace all 20 as a full set for consistent clamping and appearance. This set covers most four and five-lug wheel configurations with extras.