P23575r15
The stock (OEM) tire size for a 1998 Chevrolet Tahoe is 245/75R16.
try www.haynes.com
4X6 in the Dash, 6.5in. in the doors.
The stock wheels are 15" by 6" with P195/65 R15 tires.
I have 285/75R/16 on my 99 dodge 1500 I used my stock rims. They fit find.
if its a 16 in wheel and 1988-1998 then biggest is a 285/75 R16
Rockauto.com, check their site for pricing. Disclaimer: I don't have any interest or stock in them (kinda wish I did ;-) )
Check with the cam manufacturer of your choice for a recommendation.
the rear end is prob 3:42 limited slip rear end
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