26 Zillas will fit no problem at all. the 26" zillas measure only 24.5-25" tall so they are the same or smaller than stock. I had 27's that measured about 26 1/4" tall.
I have 26" Bighorns on my stock wheels. They measure 26.5" tall and the rears are 12" wide.. No issues at all.
I have 26" Bighorns on my stock wheels. They measure 26.5" tall and the rears are 12" wide.. No issues at all.