They will fit fine. I ran 35's on that amount for a year with off road time. I run 15x10" 3.75 BS and have never had a rubbing problem. They will allow you 100% turning radius with no rubbing on the LCA's. If you adjust your bump stops right it wont at full stuff.
But at 3" you are pretty much eliminating up travel but down is still good. I'm going to be replacing my 3" BL soon for a 1.25" BL and have no worries about rubbing and if it does, It will be plastic flair or tube so i could care less considering what i have purposely done to it. Its going to get rash anyways, To each his own, Good luck
YJ, TJ, XJ, ZJ..... Too many Jeeps!