17's for sure
I use 295/45R17 Mickey Thompson ET Street DR's ( all 4 corners for my 4x4)
mounted on 17"x9" cast aluminum Moto Metal 951's (dirt cheap) -12mm offset (total weight is about 60lbs per corner)
My effective gear ratio drops from 3.55:1 to about 4.30:1
weight is reduced by 120lbs vs my street tires on 20's (305/50R20 Terra Grapplers)
and I drop 4-5 tenths off my quarter mile ET's.
Forged would be lighter and stronger but more $$$