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
Last edited by Cleantune; 04-27-2012 at 05:12 PM.
well...I'd agree with you, but then we'd both be wrong