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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports this is the place to discuss making BMWs fast

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Old 11-10-2005, 09:48 PM   #1
Hamann bmw
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Roll cage installation

I want to know how much it will cost to install a rollcage in a 2003 M3? what type of roll cage is recommended?

Thanks
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Old 11-11-2005, 12:11 AM   #2
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Depends on what you're planning to do with the car...
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Old 11-12-2005, 10:57 AM   #3
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A bolt in cage is a DIY project. You're only looking at the cost of the cage itself.

Weld in will run you around $1500-$2000 labor, plus the cost of a full cage.

Bimmerworld can set you up with either.

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Old 11-12-2005, 02:18 PM   #4
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The roll cage should be the first thing i do to the car? If its not bolt in what else can it be ?
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Old 11-12-2005, 03:15 PM   #5
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Why do you want a roll cage?
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Old 11-12-2005, 04:02 PM   #6
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Quote:
Originally Posted by Hamann bmw
The roll cage should be the first thing i do to the car? If its not bolt in what else can it be ?
Definitely not your first mod, unless you are making this purely a track car. Then yes, the chassis and subframe reinforcements take precedence.

The Cage can also be Welded in place for a more permanent and stiffer solution.


Let us know more about your usage habits of this car.
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Old 11-12-2005, 07:31 PM   #7
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what exactly are your the intentions for the car?
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Old 11-13-2005, 08:32 PM   #8
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this car is intened to take to the track/race car. i would like to take it out on the streets some times. i am scared of my own reckless driveing thats why i want to install one. but everything is in the works on this car from engine to supension.
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Old 11-13-2005, 09:02 PM   #9
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Do you mean roll cage or roll bar? A roll cage on the street is a big no no.
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Old 11-13-2005, 09:16 PM   #10
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why is a roll cage on the street a big no no?
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Old 11-13-2005, 09:29 PM   #11
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Quote:
Originally Posted by vaio76109
Do you mean roll cage or roll bar? A roll cage on the street is a big no no.
That's nonsense.
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Old 11-13-2005, 09:33 PM   #12
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Quote:
Originally Posted by Bim Growl
A bolt in cage is a DIY project. You're only looking at the cost of the cage itself.

Weld in will run you around $1500-$2000 labor, plus the cost of a full cage.

Bimmerworld can set you up with either.

$1500-$2000 to weld in a full cage, are you JOKING? If you get the Autopower full roll cage, the cage is around $1000, and it shouldn't cost more than $300-500 to weld in, and you should strip your interior before they weld it in to save a lot of labor.
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Old 11-13-2005, 09:35 PM   #13
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Originally Posted by YellowBird330
That's nonsense.
You obviously dont either 1.)know what your talking about, or 2.) dont know the difference between a roll bar and roll cage.

Anywho, the reason for not running a roll cage on the street is because you might/will hit your head on it during a crash. Possibly making a relatively minor crash fatal for yourself. However, in a track situation you will be wearing a helmet.
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Old 11-13-2005, 09:38 PM   #14
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Quote:
Originally Posted by vaio76109
You obviously dont either 1.)know what your talking about, or 2.) dont know the difference between a roll bar and roll cage.

Anywho, the reason for not running a roll cage on the street is because you might/will hit your head on it during a crash. Possibly making a relatively minor crash fatal for yourself. However, in a track situation you will be wearing a helmet.
He could just drive around with a helmet on all the time...

That'd be so funny. Like taking the r!cer mentality to the next level!!!
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Old 11-13-2005, 09:49 PM   #15
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Quote:
Originally Posted by vaio76109
You obviously dont either 1.)know what your talking about, or 2.) dont know the difference between a roll bar and roll cage.

Anywho, the reason for not running a roll cage on the street is because you might/will hit your head on it during a crash. Possibly making a relatively minor crash fatal for yourself. However, in a track situation you will be wearing a helmet.
One of my friends got the Autopower rollcage in his e36 m3, and theres no way that your head could hit the front bar. That bar is way up on the headliner, nice and snug, but he doesn't have a rear-view mirror anymore. So maybe the car(s) with rollcages that you have had or had been in have the ghetto cages that come down inches from the headliner.

When I sit in the car, my head is a good 4-5 inches from the front bar even if I lean under it, so I don't understand how I could hit my head on it.
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Old 11-13-2005, 10:00 PM   #16
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You think when your in a wreck you stay perfectly planted in your seat?

http://forums.bimmerforums.com/forum...ollcage+street
http://forums.bimmerforums.com/forum...ollcage+street

PS-My helmet hits the headliner with my seat all the way down, meaning my head is about 2" away when not wearing a helmet.
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Old 11-13-2005, 10:12 PM   #17
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Ah, I guess it all depends on the rollcage you get. My other friend got the wrong cage welded into his STI, and the bar is lower than my head, hahaha, I think its 5-6 inches from the headliner.

But if you have 4-5 inches of clearance from the front bar, I dont understand how you will hit your head on it if you have your airbags. If you get into a bad enough accident on the street, your airbags will go off which will trigger that little explosion thing on the seatbelt (seat belt tensioner) and that should keep you in really snug. But if you have aftermarket seats and no airbags, I guess you would bounce around a lot and could hit your head on the bar.

You can also get some custom padding done over the bars, but that will cost a lot. CDOC does some crazy street rollcages like that.
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Old 11-13-2005, 10:14 PM   #18
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I would not ever run ANY rollcage on the street PERIOD.

PS-Not all crashes are headon.
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Old 11-13-2005, 10:22 PM   #19
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Quote:
Originally Posted by YellowBird330
Ah, I guess it all depends on the rollcage you get. My other friend got the wrong cage welded into his STI, and the bar is lower than my head, hahaha, I think its 5-6 inches from the headliner.

But if you have 4-5 inches of clearance from the front bar, I dont understand how you will hit your head on it if you have your airbags. If you get into a bad enough accident on the street, your airbags will go off which will trigger that little explosion thing on the seatbelt (seat belt tensioner) and that should keep you in really snug. But if you have aftermarket seats and no airbags, I guess you would bounce around a lot and could hit your head on the bar.

You can also get some custom padding done over the bars, but that will cost a lot. CDOC does some crazy street rollcages like that.
most of the padding that goes around your head such as the BSCI stuff CDOC sells is meant to be used with a helmet
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Old 11-13-2005, 10:24 PM   #20
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Quote:
Originally Posted by vaio76109
I would not ever run ANY rollcage on the street PERIOD.

PS-Not all crashes are headon.
Yeah, It's weird to drive around with a car that has been fully gutted out on the street.

I suggest this guy should just get the Autopower Race rollbar, which you can still use your back seats with the removable harness bar.
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