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Originally Posted by Tristor
I don't know of anyone who has died...Spacers are perfectly safe if they're properly made and properly installed... but otherwise they can be problematic.
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I am using ARP extended studs and H&R slip on spacers myself so should be safe but was just curious since people always say catastrophic things happen when going cheap on spacers.
For a slip on to crack and disintegrate seems odd. Almost like a washer being a problem between a bolt and nut, doesn't happen much. Maybe they didn't tighten everything down and it wobbled enough to actually damage the spacer. Then blame was put on the cheapest part? I am 99% sure the dealer did me that way. Soon after a dealer oil change and I had them rotate the tires, I began having a clicking noise happen when I turned the car only one way, I think left if I remember correctly. Turned out the lugs were just a little more than hand tightened on that one wheel. It only went on for a couple days and a few miles before I realized what it was.
Shearing all the bolts off seems like it would be over torquing it all down like what happened here:
https://www.newcougar.org/forums/pro...-fell-off.html
Every horror story online is from over torquing or not enough like what happened to me. I'd be willing to bet both of your examples were the same. Not to say I would cheap out on spacer or bolts. They are after all holding on what one could argue is the most important part of the car.
After reading this:
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It is estmated that 90% of all fastners in use in the world are not per their stamped grade. Counterfeiting bolts is highly profitable and nobody but boeing checks them. And Boeing only started doing it after testing to see why a plane went down. They found that 100% of the threaded fastners on the plane were faked.
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on bimmerforums.com, I wonder now if buying my ARP studs at on Ebay online store was safe. Looked into to it even further and found this:
https://www.thecounterfeitreport.com...486/Bolts.html
I didn't get them for cheap and of course not used but that link says to only buy the studs from a authorized dealer which I would imagine is not an Ebay store. What I bought:
https://www.ebay.com/itm/ARP-Wheel-S...72.m2749.l2649
I paid $130 at the time, not sure why they're $160 currently as every other place right now is still about the same $130. Seller has 99.99% positive feedback so everything he sells should be on the up and up I would hope.
I bet this guy in the video below is the owner of such fake ARP product: [ame]https://www.youtube.com/watch?v=dnwnb8myWKo[/ame]