I'm runnig 14s on my p700 seems to handle the weight better you have a better selection of tires if you was thinking about maybe running light truck tire id look into a 15
Yea, I been thinking about going to 12 inch rims on my P1 to give me more cushion on the rocks, still running the stock 14 inch rims and have busted 2 front stock tires. I am running 8 ply EFX's now, we'll see???????
I can't speak on the 700 but my 1000 works fine with 28's on 12inch wheels. That being said if you want more choices for tires I believe 14inch would be a better choice. I don't see me going away from the EVO's and they come in 12inch...