Help sizing wheel's and tire's

Greetings everyone,
I have a 04 Tacoma xtra cab and needing to replace the tires, due to wear.
Was wondering if you all had an opinion on tire size? My local tire shop suggests I put on 225/70r15, I'm concerned that they could rub or not fit the truck. Should I stay with the 205/75r15? I will be going with a BF Goodrich radial A/T and some new steel, black rims, sticking with the 15's. I would like to have the 225/70r15's if I won't have any trouble down the road. Any and all feedback welcome.
Thanks

 

It's also a 2wd...........

 

I would think that you can run 225/70's without issue. Is this truck a PreRunner/lifted? If so, you definitely won't have any problems, but I don't see why you would have any with a standard configuration either. The wheel wells on these trucks are fairly tolerable of a range of tires with little or no modifications.