Will these work with my current wheel studs?

M12x1.5 is a common thread pitch on most vehicles. Verify your stud size before ordering — if your car runs a different thread pitch, these won't thread on properly.

Do the lock nuts come separated from the standard nuts, or are they mixed in?

Lock nuts are included as a separate pair. The remaining 18 pieces are standard extended lug nuts. You'll pair locks with regular nuts based on which wheels need them most.

Can I use these on a track car without concerns?

Aluminum lug nuts handle daily and weekend track duty fine. For sustained high-heat or competition environments, verify your local rules — some sanctioning bodies prefer steel. Standard aluminum hardware is street and road-course safe.