Re: s10 tire size
Easiest way to go is add-a-leafs or longer shackles. AALs are good if you plan on hauling heavy stuff or towing cause they give you a little more weight capacity, but on the downs side will make your rear end a lot stiffer. This is what I used on my blazer cause I carry a lot of recovery stuff and like the extra support for towing. Shackles will lift it also but will hang down farther. also remember ther is about a 2 to 1 ratio for lift, 2 inch longer shackle gets you about 1 inch overall lift. I've also heard that longer shackles are bad about causing a lot of sway unless some type of cross support is welded in between for strenghth.
Not sure about shackles but I ordered my AAL from Summit for like 30.00 bucks. They were really easy to install. Oh, and the ride kinda reminds me of home, driven around WV in Grandpa OL' Ford Truck!
Im runnin 30s BFG AT on mine with only like 2 turns on the TB's. AAL out back were mostly for saggin rear end. No rub anywhere.