Re: What is the biggest tire I can run on a 97 x-cab Z71?
Hey, bowtiepower00, i have a 90 chevy 1500 z71, 3.42, rear end, tbi, and I have a 2.5 in. skyjacker and 33x12.50's and the didn't hurt my power/gas mileage at all. The only noticable difference is when i tow my trailer but even then it still tows it fine. I would assume a newer vortech would turn the tires even better. The only performance upgrades i have are a k&n filter, and flowmaster exaust.
Just thought i would let you know not trying to start trouble.