If you open the drivers door and look at the inside of the door jam you will see a sticker that will have the FACTORY tire size written on it.
Are 235/85r/16 compatible with 1996 Chevy tahoe
NO
Can I use 245 70 16 in an 2003 tahoe
16 inch
36mm
That would be the 4L60e transmission.
15
215 75R 15
Not sure what size the tweeters are, but the mid range speakers in both the front, and rear doors are 6.5"
Engine size
8.6
The stock (OEM) tire size for a 1998 Chevrolet Tahoe is 245/75R16.