i believe 16" is the smallest wheel i can go over the 33 brakes. Im staying 5 stud because im putting a hilux rear end in and am keeping that 5 stud as well. There are heaps more options for 5 stud wheels that 4 stud, and everyone who has a nice set of 4 stud wheels of whatever wants big dollars for them and thinks they are sitting on a gold mine or something where as you find the same wheels in 5 stud there half the price.