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Go Back   E46Fanatics > E46 BMW > E46 Convertible

E46 Convertible
The E46 vert forum. Talk about dropping your E46 top here.

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Old 07-17-2014, 07:57 AM   #1
iDc
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Removing convertible completely?

Hi.

Has anyone removed their convertible top completely and used only a hardtop?

How much does the motor/soft top combination weigh?

To my understanding, convertible has some extra frame reinforcement, so I imagine the soft top and motor assembly only weighing about 150 lbs.
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Old 07-17-2014, 07:58 AM   #2
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I forgot to add that I am only asking because I didn't know only hardtops were allowed for HPDE. I have a corvette I can use but wanted to track the M3.
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Old 07-17-2014, 11:02 AM   #3
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Search, it's been discussed. The soft top is the mounting point for the hard top, so you cannot remove one and install the other without fabricating brackets.


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Old 07-17-2014, 11:19 AM   #4
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A "hardtop" will not provide any additional safety for an HPDE. Some groups may allow it, but common sense should still dictate you install a good aftermarket roll bar. Any hardtop I've ever seen would crumple like a soda can if a car was dropped on top of it.
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Old 07-18-2014, 12:08 AM   #5
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track a convertible. ?? dumb idea is dumb. (I don't know how to be any more politically correct than that.)
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Old 07-18-2014, 12:18 AM   #6
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Understood. I actually looked at most of the roll bar set up but I don't want to have a roll bar on my street driven car.

beemerdude, I don't think its dumb. Look at all the miatas at the tracks.

Guess my z06 will be used again for my next track day

Last edited by iDc; 07-18-2014 at 12:19 AM.
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Old 07-18-2014, 01:43 AM   #7
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Originally Posted by beeemerdude View Post
track a convertible. ?? dumb idea is dumb. (I don't know how to be any more politically correct than that.)
Dumb comment. Anyone that's been to a track knows Miatas are common, and perform well.

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Old 07-18-2014, 07:33 AM   #8
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Understood. I actually looked at most of the roll bar set up but I don't want to have a roll bar on my street driven car.
Not saying you're wrong, but what's your reasoning for that? A 4-point roll bar behind the occupants isn't unsafe like driving around with a 6- or 8-point cage would be.
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Old 07-19-2014, 01:04 AM   #9
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Not saying you're wrong, but what's your reasoning for that? A 4-point roll bar behind the occupants isn't unsafe like driving around with a 6- or 8-point cage would be.
My reason- on the tracks I'll have racing harness (4 point, 6 point, 8 point, 1000 point, I'd have harness on) on the street, harnesses are a pain in the arse. But some roll bar options seems to be away from the head .
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Old 07-19-2014, 09:14 AM   #10
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Oh ok, that's a personal preference?
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Old 07-19-2014, 12:43 PM   #11
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Sort of, yes. Mainly because of stories i have heard of roll bar plus head injuries during accidents or crash
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Old 07-19-2014, 01:09 PM   #12
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Good friend of mine and his passenger died from head injuries when he was crossing a side hill at about 5 mph and rolled 3 times down the hill.
Non padded roll bar in a jeep.

Another friend had a MGB with a roll bar and got rear ended, he survived but his skull sets off metal detectors at the airport now.. Another un-padded rollbar.

Miata's are kind of the exception, if you use a 4 point hoop its behind you far enough that the seat has to collapse for you to hit it.. Which can happen if you back it in to the wall hard enough..

Another hazard when tracking street cars is the seat frame, most are tubular steal which can break and jab you in an impact. AL or composite seat buckets are the way to go for on track.

Be safe..
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Old 07-19-2014, 04:01 PM   #13
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Dumb comment. Anyone that's been to a track knows Miatas are common, and perform well.

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re: above post. I accept your belated apology.
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Old 07-19-2014, 04:35 PM   #14
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Yeah, I don't know why proper SFI padding isn't required for track days. But that's not a convertible thing, that's a roll bar thing.

That's an interesting thought on the seats, kind of goes against conventional wisdom that a street seat will collapse and help prevent injury as your three-point belt allows you to slide sideways... But that's more about properly pairing seats and harnesses.
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Old 07-19-2014, 04:57 PM   #15
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I don't know the rules for the racing/training you want to do.
Does a removable hardtop even count? I suspect it would have to be real hard top,
and/or roll bar. I might be wrong, but I don't think the removable hardtop
really adds any safety to the bmw vert. It is mostly a decoration/comfort thing.
For safety you are relying on the strong window frame, and the pop up roll bars.
What do miata's have to do to play in the things you want to try?
If you want to track you M3, which sounds like a lot of fun, you really have to consider
two things. What makes you feel safe, and, what do the rules require.
If the removable hard top makes both you and them happy, then give it a go.
If it makes you happy, then worry about making custom mounts to allow you
to remove the softtop to save weight. Before I did that I'd buy a new car
for racing. It seems a shame not to be able drop the top on a convertible.
I do wonder what a Miata has to do to qualify.
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Old 07-19-2014, 05:57 PM   #16
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re: above post. I accept your belated apology.
Nope, still dumb. Stories of rolling a jeep aren't applicable to a low sports car.

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Old 07-19-2014, 05:59 PM   #17
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Yeah, I don't know why proper SFI padding isn't required for track days. But that's not a convertible thing, that's a roll bar thing.
Exactly.

Plus, on the track you'll have a helmet.


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Old 07-20-2014, 12:34 PM   #18
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Quote:
Originally Posted by dknightd View Post
I don't know the rules for the racing/training you want to do.
Does a removable hardtop even count? I suspect it would have to be real hard top,
and/or roll bar. I might be wrong, but I don't think the removable hardtop
really adds any safety to the bmw vert. It is mostly a decoration/comfort thing.
For safety you are relying on the strong window frame, and the pop up roll bars.
What do miata's have to do to play in the things you want to try?
If you want to track you M3, which sounds like a lot of fun, you really have to consider
two things. What makes you feel safe, and, what do the rules require.
If the removable hard top makes both you and them happy, then give it a go.
If it makes you happy, then worry about making custom mounts to allow you
to remove the softtop to save weight. Before I did that I'd buy a new car
for racing. It seems a shame not to be able drop the top on a convertible.
I do wonder what a Miata has to do to qualify.
For any DEs I'm aware of, Miatas have to have a rollbar or hardtop. It doesn't make sense, but there you go.
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