no rubbing at all
I have the 315's and the chrome clad steal rims. I even have the extra weight of a ranchhand on the front and I have yet to rub what-so-ever. I have been deer/elk hunting where I have gone down some really nasty roads that flexed the suspension quite a bit and never rubbed. The tires have been on my truck for over 10,000 miles now.
When I was thinking about buying the tires I too did not think that the tires would fit without rubbing. But I decided that i would give it a try after seeing a 1500 4x4 being able to do it without too much of a rubbing problem. I figured that my 2500 sat up quite alot taller then him and he showed to have little rubbing so I thought I would give it a try.
Also, there are so many members on the TDR that have not had issues with rubbing.
I have a pcture of the truck with the tires in my reader rig, not very good for showing the clearance of the tires. the picture is without the ranchhand also. I will try to update it in a little bit.