Your wheels are 15's.. As you said in your tire size. The ones in your Jeep profile pic are not stock TJ wheels. Since im not sure what wheels those are in your picture I can't tell you if what you got is 15x7's or 15x8's and what the back spacing is on them. You can't fit 33's reasonably unless you have 2.5in of lift and more if you want room for flex for offroading. On a stock TJ suspension, running 30x9.5/15 or 31x10.5/15 is what you ideally want to do. Either of those sizes will work for you. If your wheels are 15x8's then go with the the 31x10.5's as it will alow you to air down a bit when offroading.