With a 12.5" wide tire your biggest issue is going to be rubbing on the Upper control arm. With a stock wheel, this will require wheel spacers. I can see from your picture it looks like you are running some di*k cepek rims. Do you recall what the back spacing or offset is on those wheels? From what I remember they have a 0 mm offset and 4.5" of backspacing. Which is generally what is needed. With a 2" lift and those rims you should be able to run the 12.5" tires with minimal trimming/pounding to the pinch weld area. However I would suggest getting some wheel spacers just to be safe.