Car Tweeter speakers may be the only component missing to complete your car audio setup. Tweeters purpose is to produce high audio frequencies.For speakers,tweeters make it seem like the sound is surrounded by a stage.
The most common types of car tweeters are Dome Tweeters & Bullet tweeters with their difference in performance being realized in dispersion control & efficiency.
Bullet tweeters have relatively a higher power output compared to dome tweeters.
For Personal Vehicles, tweeters are mostly mounted on either side of the dashboard close to the doors.
Shop for car tweeters by your favorite brand; Pioneer, Ken-wood & Sony from the link below