Tires for 03 TRD Tacoma?

I currently have BFG AT/TKO 32 11.50 15 on my 03 v6 TRD Tacoma (w/ a 3in Basic Fabtech lift), and I would like to upgrade to 33 12.50 15. So my question is when I was looking at a few site for tires I noticed that most site have 33 12.5 15 and 33 12.50 15 is there a difference between the two?