can anybody please tell me what the rim/wheel thread size is? like in my other ride the thread is 4x100 pattern is it that same pattern? i believe it is. thanks.:)

edit: also what is the size of the center wheel cap?

The stud threads should be 12x1.5mm. The bolt circle, what I believe you are asking about is 4x114.5mm (4.5".)
The center caps?? I don;t mean to pry, and we all have our reasons, but why? Do you mean on the back of the wheel, as in where a concentric ring adapter would go?