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      01-29-2013, 08:29 AM   #21
GaryS
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Drives: 2009 135i 6MT
Join Date: Feb 2010
Location: Maryland

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2009 135i  [6.50]
Quote:
Originally Posted by andrey_gta View Post
Valid point

I feel compelled to do something because i will switch to non-Runflat tires, most likely the PSS. And right now on my winter tires I feel the rear bounce on bumpy roads and think it is what everyone says that stock msport/135i suspension is under dampened & needs the shocks changed. Looking into kits you find various price points & solutions. Some coilovers even have camber kits.
If you install stiffer springs and keep the stock subframe bushings, the rear will bounce as much or probably even more over bumps - about 1-1.5". If you want to keep the stock subframe bushings, you should keep the stock springs too and just install better shocks. That will fix the bouncing and sliding in bumpy corners, which I consider the biggest problem with the stock suspension. If you want less body roll too, you should install an M3 front swaybar. You can pull the alignment pins for a little more camber, but you don't need camber plates for street.
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