I know that its widely known that aftermarket lugs on OEM wheels is a no-no, but what exactly is the theory behind this? Does anyone have the time to explain to me?

Ive seen many threads with people saying that aftermarket (Muteki to be specific) lugs won't fit on oem wheels but I've owned a few different kinds of OEM wheels and these HX wheels I have look a bit different.
Basically...they look like they'll accept the tapered design of the Mutekis. If I had a set of OEM lugs with me I wouldnt even ask the question but before I roll to Pep Boys and drop 30 bucks, I want to see if this could be an exception.

And I mean....I could go outside and TRY the aftermarket lugs but I'm afraid it'll go on and "look" like its fine, but its really not safe and will loosen up VERY quickly over time.

I just want to see if anyone has any "real" insight on this as I take saftey first, so if they will TECHNICALLY work but its not reccomended, I'd like to know.

Thanks!

EDIT: I actually have a spare Muteki lug with me right now and I put it up to the hole on the HX and it kinda looks like it will mate up fairly well. I mean...I know its possible to use them and drive up and down the driveway. But what will happen with time? Will the wheel become loose rather quickly?

 

What can happen if they don't mate right? Well they can loosen stuff can also start to crack. Just asking for trouble. Get the right set of lugs, they are super cheap.

 

I see..thanks for your reply man. I think I'll just run to pep boys and get the acorn style ones that I need.

I appreciate it!