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      08-28-2024, 02:16 PM   #10
M3SQRD
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Drives: 330G20,240F22,M3E92,F82,MCSR56
Join Date: Jun 2009
Location: Mid-Atlantic

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Quote:
Originally Posted by RalliartRsX View Post
I am going to go out on a limb here and say; most of the hard parker roll bars on the market today are junk........

Note: From someone who caged his E92 recently to do GLTC and went through how a cage properly distributes the loads/forces.

I still have pictures of that Mustang that rolled at Buttonwillow (? I know if was a track in CA) and the bolted in bar punched right through the floor plates and the driver and pass was lucky to walk away....
I absolutely agree with your statement about OTS bolt-in roll bars not being functional/safe. You need to stiffen and spread the load out over a larger area, especially the main hoop connections to the chassis floor. IIRC, there is one OTS roll bar that has adequate support/load path at its four interfaces with the chassis but I’d still go for a custom welded-in roll bar. My e46 M3 roll bar interfaces matched BW’s full cage design used in their e90 world challenge touring car race cars.
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