Oh man They are everywhere!!! My personal favorite is on the way to Black Canyon City on the I-17 N.
You exit the highway at Table Mesa Exit #236 and go left over the I17 then right and it's nothing but trails throughout the area. You can Also go left just as you get off the I17. Just north of Table Mesa Exit #236 Is Black Canyon City Exits #242 & #244. Good place to get some fuel and drinks. No fast food joints around but the market just in town on the left has some good chicken and fries.
Further north is Bumble Bee and Crown King at Exit #248. There is some fairly good wheeling over there.
Also you can Go into Superior and turn right onto Mary Rd. follow it around until you get to Golf Course Rd, it's just past the Community Pool, then make a right onto Golf Course Rd and follow it back past the cattle guards there is an old quarry spot to the right in fields. Go up and beyond that and there is a great chunk of wheeling back there. Might be wise to take a guide however as one could get lost.
There is also Four Peaks out on the way to Payson on the old Highway.
Let me know if this helps you.