I believe that there are two speaker grills on the dash they are 3.5 In. Than in the doors its 6in and in the rear it 6x8 but I put some 6x9 in mine!
5X7 all around
4x6- not upgradable without sheetmetal modifications.
all speakers are 5"x7" - its a special size for cars made by ford motor company
what size speakers fit in a 1989 Toyota cressida
my tire sizes for my cougar are P215/50R16 or go here so you can find your size http://www.dragtimes.com/Mercury-Cougar-Tires-m31-n237.html
P205/70R15 comes standard on the LS model for that year. P225/60VR16 is standard on the XR7.
6.5 inch round speakers
What is the motor size? Run1
5x7 or 6x8, either or
6 x 8
6 * 8 or smaller there are few speakers in this size. 6 * 9 will not fit.
The rear speakers in a 2001 Mercury Sable measure 6 inches by 8 inches. These speakers are located in the rear deck of the vehicle.
On a 2000 Mercury Cougar : Open the drivers door , and on the end of the door ( or the latch pillar ) you will see an information sticker . One of the things it shows is the original size of tires on the vehicle from the factory
Im pretty sure factory size is 215/55/16
Pretty sure its 34mm
The front speakers in a 1989 Mazda B2600 truck measure 5 inches by 7 inches. These speakers are located in the front doors.
6 x 8
5x7 no bigger no smaller.
According to the 2000 Mercury Cougar Owner Guide : Both the 2.0 litre four cylinder and the 2.5 litre V6 engines came with the Motorcraft BXT-40R battery ( that's BCI group size 40R )
Should be 4x6. 3x5 is the other size.