four-luggin' wheel spacers

[Cleantune]

Hey, I've recently been doing some research on the topic and I'm very skeptical so I figured I'd ask the experts... you guys and girls!

So the spacer is the 30mm spacer kit that PBM sells. Its a bolt on CNC machined aluminum spacer consisting of a hub-centric 15mm base w/ extended studs and then 7mm, 5mm and 3mm stackers.





After seeing that pic of the 3 wheeled, ebay-spacer equipped, rsx riding on one wheel (you can pm me for pic if you haven't already seen it), I started to think about it way too much:

1. I read in an old Dec 2009 modified mag that OEM Nissan wheel studs are notoriously "soft" so...
2. I'm worried about shearing forces acting on the nuts that hold the spacer to the hub. in addition to the short nut that is used to hold on the spacer, there are only 4 wheel studs to distribute the shearing forces on; instead of 5 studs.

3. I'm also worried about bending / breaking spacer studs because only the initial 15mm spacer with the studs is truly hub centric, the outer most slip on spacers are only "centric" to the wheel not the hub? So the stack-able spacers are mostly lug-centric? and could potentially slide on the surface of the 15mm spacer causing the spacer studs to bend/break?

I don't have a lot of experience with spacers and so I'd thought I'd ask around to see if anyone knows anyone who is rockin 4 lug spacer status or has first hand experience with this kind of offset helper.

Any info on any brand name 4 lug spacer use would be appreciated, Thanks!

[Cleantune]

Okay, sry girls and guys, I couldn't wait....

.... so I've been talking to some other people on other forums. One of these people I talked to was an engineer and he said that I was over thinking this way too much. He said that shearing forces on the studs would not be a problem because the studs don't hold the wheel, the lug nuts are what holds the wheel on, so the wheel doesn't even really come in contact with the studs. The nuts that hold the spacer to the wheel have enough thread to ensure optimum strength and their acorn shape helps to align and seat them securely, forming a ridged structure between the OEM studs, OEM hub and the spacer (just like the acorn shape of OEM lug nuts help form a more ridged structure between the OEM studs, OEM hub and the Wheel) .

As far as the stacks go, people have been running stack-able spacers on their track cars with extended wheel studs for years without problems. This is also the third version of PBM spacer, so they have greatly improved the design over their version 1 and 2 series (all spacers are same diameter as inner brake rotor hat) and they are hub centric so they are balanced and rest on the hub, NOT on the OEM lugs.

I've also been doing some research on these spacers and people drift with them! So all in all I have learned a lot myself and have been able to wrap my mind around the technical/engineering aspects of how and why these spacers are able to endure both daily and track driven cars.

So, unless anyone has anything else to add; if its okay with everyone else, I'd be alright with closing this thread