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PostPosted: Fri May 06, 2016 3:54 pm 
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Forum Spectator
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Joined: Fri May 06, 2016 3:39 pm
Posts: 1
Hello everyone,

I have a 2005 E46 M3 convertible and would love to get into HPDE.

After purchasing the vehicle and now looking into the rules it seems most or all tracks require roll bars. Does anyone have experience in this? If so, how would I best proceed in meeting these requirements?

Thank you for your time.


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PostPosted: Wed May 11, 2016 9:41 am 
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Forum Hot Lapper
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Joined: Wed Jul 16, 2008 11:52 am
Posts: 97
jackpilot wrote:
Hello everyone,

I have a 2005 E46 M3 convertible and would love to get into HPDE.

After purchasing the vehicle and now looking into the rules it seems most or all tracks require roll bars. Does anyone have experience in this? If so, how would I best proceed in meeting these requirements?

Thank you for your time.


Don't think any track requires a roll bar...groups might require additional safety equipment. I don't think NASA requires and additional safety equipment.


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PostPosted: Wed May 11, 2016 6:48 pm 
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Forum Hot Lapper
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Joined: Wed Sep 19, 2012 10:05 pm
Posts: 91
Location: Flower Mound, TX
Here are the HPDE rules:

"11.4.7 Roll Bars
All open cars should have a roll bar installed to help protect the occupant(s) from injury during a roll-over. The
main hoop shall be one continuous piece with smooth Mandrel bends with no evidence of crimping or wall
failure. All welds should be of the highest possible quality, with full penetration [Ref:(15.6.15)]. All cars with roll
bars are required to have adequate roll bar padding per CCR section #15.6.4. In cases where the driver’s head
may come in contact with the roll bar should the seatback fail, a seatback brace is required in conformance with
section #15.6.21. Acceptable roll bars include, but are not limited to, the following:
Hard Dog
AC - Ace
D - Deuce (center-braced model only)
AB - M1 Hard Core
TB – M1 Hard Core Hardtop
9B – M2 Hard Core
NB – M2 Hard Core
30
Auto Power
Street Roll Bar
Street-Sport Roll Bar
Race Roll Bar
Blackbird Fabworx (Miata / MX5 / 2017 Fiat 124)
SD (for NA and NB)
RZ (for NC and ND)
GT3 (for NA, NB, NC and ND)
The above roll bars are examples only. NASA does not endorse any brand or model and will not be held liable
for any failures of roll bars."

Page 29 here: https://nasa-assets.s3.amazonaws.com/do ... 2016.4.pdf

I have a '99 Miata. For my car an aftermarket roll bar is required.

Does an E46 M3 have any roll over protection?
i.e. my wife' G37 convertible has charged (explosive) rear headrests that deploy in the event of a roll over.

_________________
#194 SM - '99 Green Miata


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PostPosted: Thu May 12, 2016 5:55 am 
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Super Postmeister
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Joined: Thu Aug 18, 2005 6:28 pm
Posts: 12738
Location: Houston, TX
E46 has pop-up bars IIRC and could be run as-is I believe. Check with mgt to be sure....

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Ken Brewer - formerly 1994 Toyota MR2 #6 TTF, PTF, E3
2012 C6Z06
2010 RX8 R3


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