I'm buying one right now. You can find this information for any car if you open the drivers door and look at the body above the door latch. There is a small plate that has the information.
For the '88 Ford it's P235 / 75R15 XL
P235-75r15
15 and 16 inches Look on door jam
16x6 steel rim
Stock Tire Size 215/75-15
The stock speakers in a Festiva are 4 inch all around
235 x 75 R15
ow many dash bulbs in f150 '95
P235/75R15
6.5
5x7 6x8
P235/70R16
5 on 135mm