Not Ranked
I don't think it was any type of failure of the trailing arm itself. BDR uses BMW E36 rear trailing arms including the mounting BMW RTAB and mounting bracket. I could not even imagine how many tracked E36 are out there getting beaten on. An E36 must weigh 1000 pounds more and I would trust BMW engineering, testing and durability over many replica suspension parts. But..the gusset of the BDR frame that the RTAB bracket mounts to could have very well failed. I do remember seeing somewhere pictures of problems on earlier cars. I beleive BDR notified these individuals once this issue was discovered and was corrected on all later cars at the factory.
Do we know if the bolts had been properly checked and torqued prior to tracking? Had the car had any prior accidents or suspension alterations?
I am glad that he was not able to drive faster than his guardian angel could fly.
I am very glad that he was able to walk away.
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