Quote:
Originally Posted by churchx
How one can break several wheel studs just from tracking in just one trackday? There was something else wrong imho, then high temps from tires/brakes. My guess - overtightened or not tightened lugnuts, when changing to/from track tire wheel set. And yes, more camber will even out tire wear. I'd get also camberbolts though in addition to camplates, as just camberbolts or just camplates might be insufficient for optimum track camber of -3 and up. +rear LCAs to up camber in rear too.
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Broken studs are very common on the 86. The most common failure mode is galling of the threads initiated by a thread defect, which then welds the nut to the stud. APR studs and aftermarket lugs are the popular fix.
If you bump the wheel against your studs too hard, you can damage the threads on your studs enough to start them galling. Power tools and heat exacerbate the situation. If you can't easily spin the lugs with your fingers, you will likely soon have problems, unless you get new lugnut and clean the stud threads w/ a thread die or 60deg file.
I have dealt a lot with galling in my day job. Using dissimilar materials or coatings are the most common way to address it. More info here:
https://en.wikipedia.org/wiki/Galling