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06-08-2009, 01:22 PM | #1 |
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Z4 Roadster Stock Roll Bar and the use of a Harness
Greetings,
I use my Z4 Roadster for DE, Autocross, and Drift events. Would you please share with me what you know regarding the stock Roll Bar and how much protection it provides in case of a roll over? With my helmet on, I am ¼” below the edge of the bar. My Z4 has leather seats. I use my knees to support my body while cornering. By the end of a session, both knees ache. I am considering a harness and I have the following questions: 1- My understanding is that using a harness without a roll cage is dangerous. This is because stock seatbelts are designed to allow the body to submarine in case of a roll over. With the harness, the body is not going anywhere; therefore, you need the roll cage to ensure that your head does not get injured. Is my understanding correct? Does it apply to the Z4 with extendable roll bars? 2-If the harness is possible, is there a harness bar for the Z4 Roadster? If not, are there good mounting points? I know a full cage is the correct solution, however, I am not ready for one yet as my Z4 is still mainly a street car. I look forward to your replies. Thanks in advance. |
06-08-2009, 02:19 PM | #2 |
Imola Lover
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You know if your goal is to give you more stability in the seat, there are multiple ways of using your OEM seat belt provide this without adding anything extra...
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06-09-2009, 07:56 AM | #4 |
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I have the M sport seats and a CG lock in our car and it's not too bad. Considerable improvement over the std sport seat and seat belt.
The next step for me on our dual street/track car might be a different seat but we do about 6-8 weekends a year and I think I'm adequate now. |
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06-09-2009, 10:03 AM | #5 |
Imola Lover
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With completely stock seat belt and ///M Sport seats, I'm able to completely lock myself into my seat so I can't move anything but my arms, legs, and head. It's great for stability on a tight track.
What I do (requires power seats):
This technique works wonders for me.
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06-09-2009, 10:28 AM | #6 |
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Thanks,
I do that to secure a child seat but I did not think of doing it to secure my 200lb. I will give it a try. I am drifting at 80mph. Hopefully this works. Any thoughts regarding the stock roll bars and how much protection they provide? |
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harness, roll bar, z4 roaster de safety |
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