Should be the same as the 03-04 in which case the front speakers are 6.5" and the rear are 6x9's
Try to use the Hyundai Tiburon speaker adapters plugs so you don't need to cut wires and mess up the electric system, you can get those from eBay or amazon.
5 1/4". I believe that 6.5" can fit there also but I'm not exactly sure how.
go to cruthfield.com
6x8 , front and rear speakers. Can use 6x9's by removing the factory bezel.
6.5" in all four doors
According to Crutchfield the front speakers on a 1999 Tiburon are 6 and 3/4 inches.
6 3/4 in front 6x9 in back
Go to Crutchfield.com and they will have all of the sizes of your factory size speakers for your car.
You don't need factory speakers. Just buy the same size speakers and install.
fronts are 6 3/4 rears are 6x9
what size door speakers are in a 2005 Chevy Malibu classic
6x8
The 2005 Nissan Altima has door speakers that are 6.5 inches. If you are replacing your speakers, you can also use a 5.5-inch size.