There are several features you may want to consider when shopping for car speakers:

1. Size: You’ll need to make sure the speakers you choose will fit in your car’s speaker openings. Measure the diameter of the opening to determine the size of the speakers you need.
2. Power handling: Make sure the speakers you choose can handle the power output of your car’s audio system. If the speakers are underpowered, they may distort or break.
3. Frequency response: The frequency response range of a speaker determines what frequencies it can reproduce. A speaker with a wide frequency response range will be able to reproduce a wide range of sounds, including both highs and lows.
4. Sensitivity: The sensitivity of a speaker refers to how efficiently it converts power into sound. A speaker with a high sensitivity rating will be able to produce loud, clear sound with less power.
5. Materials: The materials used in the construction of a speaker can affect its sound quality and durability. Look for speakers with high-quality materials such as Kevlar or polypropylene cones and rubber surrounds.
6. Brand reputation: Do some research on the brands you’re considering and read reviews from other customers. This will give you an idea of the quality and reliability of the speakers.