I have a 2008 Aveo5 LS and I'm trying to upgrade the door speaker in the car because they sound terrible. However I'm having trouble finding the right speaker size. One site said 4" 2 ways and another site said 5" 1/4. Any help would be appreciated!

 

You have to remove the old speakers anyway to change them. So take them out, see what you have and then you know exactly what to buy.