New member here. So, about two weeks ago, the beater I was driving was slowly falling apart before my eyes, and I decided I couldnt take it any more, so I took a few $k, went looking and that afternoon, bought a 2000 GMC Sierra Z71 4x4. I gotta say, I really love it! It's been several years since I've driven a truck, and I'd never owned a full-size, but I've really taken to this thing. I'm still figuring out a few things. It's skidded a little in rain here and again, although the tires look good. I am curious as to what's considered the optimal tire size, style and brand. Also I haven't owned a 4x4 previously, so I'm still learning how to use that feature. If anybody has suggestions or advice about those or anything else specific to these trucks, maintenance, particular issues or recommended upgrades, feel free to chime in! Thanks.