Legal miata roll bar tubing size?

RickyBeam · **Posted:** Fri Dec 11, 2015 7:26 pm

Heh. I'm going to need you to make 9 more and submit them to NHTSA side impact testing. :-)

Like I said, better (stronger) than factory, but the failure modes worry me.

JamesMilko · **Posted:** Sat Dec 12, 2015 8:10 pm

Roger McDaniels wrote:

I'm with Ricky on this one, those side bars are welded to sheet metal at the bottom and have nothing holding them in place other than the main hoop at the rear. I would have skipped them.

That's the main structural member for that side of the car. Those two rails and the transmission tunnel are what gives the car it's strength.

Roger McDaniels · **Posted:** Sat Dec 12, 2015 9:53 pm

It's a unibody car; the main structural components of the middle of the car are formed out of sheet metal. It has structural rigidity, but it's still a thin piece of metal and the side bars do not have support that would be acceptable to any sanctioning organization because they are only secured at one end.

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Legal miata roll bar tubing size?

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