Can I fit 32x11.50 on stock 15x7 wheels safely and if not what are the pros and cons of the 15x8 wheels?

yes, they will fit

but you might notice more flat spot wearing.

and what exactly is flat spot wearing?

...i run the bfg a/t's, 32x11.50x15's on my stock 15x7 ranger wheels with no problems...:D

I also have 32X11.50 Buckshot Mudders on my stock wheels - for about 2 years now, and have no problems, just remember to rotate!

I also have 32X11.50 Buckshot Mudders on my stock wheels - for about 2 years now, and have no problems, just remember to rotate!

no trimming?? or rubbing??