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06-16-2013, 04:22 AM | #1 |
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Difference between 1M and M3 rear swaybar?
The 1M shares the exact same front swaybar as the E90/E92 M3 but the rear is a different part number (but the same diameter).
Does anybody know how the E82 1M rear swaybar is different to the E90/E92 M3 rear swaybar? |
06-16-2013, 05:23 AM | #2 |
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This is a good question! I wonder why that is because the 1M basically has the same rear axle and subframe as the M3 has.
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06-17-2013, 04:26 AM | #3 |
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06-17-2013, 06:38 AM | #4 |
teh porcupine
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Shorter wheel base wouldn't necessarily affect sway bars, having a narrower track would.
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06-17-2013, 07:46 AM | #5 |
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06-17-2013, 10:15 AM | #6 |
teh porcupine
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I know the 1M is has the same track. Wheelbase might affect how BMW tunes the cars via the swaybar but would not, in itself, necessitate a different sway bar. A different track would. That's the point I was trying to make (poorly).
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06-17-2013, 10:41 AM | #7 |
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06-17-2013, 07:12 PM | #8 |
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Are there any resellers on here who would be able to compare them physically for differences in the bends and weigh them to estimate tube thickness? It'd be really good to know.
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06-18-2013, 02:33 AM | #9 | |
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And if you dont have LSD forget about it. |
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06-18-2013, 03:20 AM | #10 |
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possibly slightly softer rear sway to try and make it slightly more comfortable to overcome the shorter wheelbase?
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06-18-2013, 03:33 AM | #11 | |
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It's pretty agreed around here that the M3 rear swaybar is on the stiff side so if the 1M rear swaybar is a little thinner tube, it'll be slightly softer and lighter as well, making it a better option for the 1 series than an M3 item. |
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06-18-2013, 04:04 AM | #12 | |
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As you know E82 non sport came without any swaybar in the back. |
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06-18-2013, 05:10 AM | #13 |
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Yep the 15mm E93 rear swaybar is another option I'm considering.
I think the reason why 1 series are known to understeer and the reason why they have small or no rear swaybar is that undersizing or removing the rear swaybar is a cheap way to get better rear traction without having to spend on an LSD from factory. |
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06-18-2013, 06:57 AM | #14 | |
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06-18-2013, 07:26 AM | #15 |
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If they are the same outer diameter, and the only difference is the thickness of the tube, then they are essentially the same stiffness. The outer diameter is what determines the stiffness of a bar in torsion.
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06-18-2013, 03:08 PM | #16 |
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The OD has the biggest effect but thichness makes a small difference too. A solid swaybar is definitely stiffer than a hollow one of the same diameter. Softness isn't the only possible difference between the two. The 1M one might be bent to better suit the 1 series somehow. As title states, really keen to find out what the difference is.
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