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BMW 3-Series (E90 E92) Forum
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:: BMR Autowerkes :: M3 Suspension Upgrades
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04-23-2013, 01:19 AM | #1 |
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:: BMR Autowerkes :: M3 Suspension Upgrades
M3 suspension upgrades are the perfect way to upgrade your E9Xs handling by controlling body roll, increasing turn in 'feel' and allowing higher cornering speeds.
*** FAQs *** What's the best way to increase handling? I'd always suggest starting with springs and shocks as these have the largest single impact on the car's ride and handling. A quality set of coilovers absolutely transforms the fidgety ride of OEM M-Sport suspension and cures the floaty non M-Sport suspension I've done coilovers, what's next? M3 control arms - great bang for your buck. You can really feel the difference this makes as turn in is much improved and the car has less tendency to understeer, aided by the additional neg camber allowed by this upgrade to the tune of 3/4 degree. I find there is a bit too much bodyroll, what can I do to contain that a bit more? Swaybars are your friend here. By upgrading from your stock swaybar or M-sport swaybar, to E92 or E93 M3 swaybars bodyroll will be much better contained. As a general rule of thumb for the 1-Series guys we recommend E92 M3 swaybars and for the slightly larger heavier 3-Series guys, E93 are the way to go. What's the difference between E92 and E93 M3 swaybars Diameter in thickness and therefore the bar's ability to counter bodyroll. Front E92 M3 - 26.5mm Front E93 M3 - 28mm Rear E92 M3 - 22.5mm Rear E93 M3 - 23.6mm While I'm at it, anything else I should consider? Most of the M3 suspension components are installed largely independent of each other, that is, you're not going to save heaps by installing it all at once so don't pressure yourself to do so - in fact, doing one piece at a time would allow you to appreciate each upgrade as you go along. However should you be opting for a rear sway bar upgrade, I'd highly suggest upgrading the rear subframe mounts to M3 spec at the same time as the rear subframe would be dropped anyway. *** Prices *** Front E92 M3 Front Sway bar kit - $385 E93 M3 Front Sway bar kit - $385 E9X M3 Control Arm kit* - $459 M3 Strut bar kit - $365 Rear E92 M3 Rear Sway bar kit - $345 E93 M3 Rear Sway bar kit - $345 E9X M3 Subframe bushings - $329 I have left out the upper and lower rear control arms for simplicity - any questions on this please ask or PM. *: This is an OE kit, whilst it is identical in construction and operation to OEM M3 control arms it does not feature the ///M logo on the hardware. The ///M logo can be added for +$200 |
10-27-2013, 07:33 AM | #3 |
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Hey Stu, would getting these sway bars have a really big impact on ride comfort? I was thinking that with the front M3 sway bar on my M-Sport, there wouldn't be a big improvement in handling as it's only marginally thicker. And so I'm now leaning towards the rear sway bar....but don't want the ride comfort to get much worse - am I asking for too much? Haha just looking for a way to improve handling without compromising too much on ride comfort.
Is strut + upgraded rear sway a common setup? Cheers and apologies for resurrecting an old thread. |
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10-27-2013, 11:00 PM | #4 |
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Hey mate, being a RWD you'd definitely benefit more from a front sway than rear.
The e93 m3 bar is the way to go, and it won't compromise right comfort, but will certainly exponentially increase handling. |
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10-28-2013, 05:14 PM | #5 | |
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Quote:
What do you want out of the handling upgrades? Rear swaybar is a great upgrade, unfortunately install costs are rather high. Depends how he wants it set up, i.e. flatter turn in, less understeer/more oversteer... |
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10-28-2013, 06:17 PM | #6 | ||
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Thanks guys.
There's the million dollar question haha. I suppose I want more responsive/sharper steering in everyday driving. I've noticed there's a fairly noticeable amount of body roll as is and it can't hurt having the car more stable and flat. I'm currently on run-flats and I figure whenever I switch over to non-RFTs, I'll gain a bit in terms of grip. And so I'm not too fussed about a slight loss in grip coming out of upgrading the sway bars. I know it makes me look terrible but I'm looking at bang-for-buck while maintaining/improving current ride comfort. Quote:
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Thanks again. |
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