BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > OEM F30 style 397 18" alloys on F2x m135i
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      05-08-2015, 12:51 AM   #23
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Aus,

It doesn't bottom out, v slight rub when having lots of fun !!!! ;-P
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      05-08-2015, 01:01 AM   #24
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Aus,

It doesn't bottom out, v slight rub when having lots of fun !!!! ;-P
Interesting. I have noticed that the 116i M Sport bottoms out quite easily in large high speed bumps, but it doesn't rub. I would have thought that the heavier M135i would also bottom out.
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      05-08-2015, 01:46 AM   #25
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Originally Posted by ovekvam View Post
Interesting. I have noticed that the 116i M Sport bottoms out quite easily in large high speed bumps, but it doesn't rub. I would have thought that the heavier M135i would also bottom out.

'Ditto' for the 125i M Sport on 18's
Mine does find the suspension stops when pushed hard through a high speed deep dip. Suspension still handles very well during this process.
I have Run flats on, so it may be different with the Michelin PSS non run flats as they are not as ridgid in the side walls.
Hopefully I can test that out in a few weeks time when I fit Michelin PSS non run flats on mine.
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      05-08-2015, 02:41 AM   #26
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Interesting. I have noticed that the 116i M Sport bottoms out quite easily in large high speed bumps, but it doesn't rub. I would have thought that the heavier M135i would also bottom out.
Maybe but I have uprated springs and ARBs. No issues. Sounds like you might want to tweak the chassis of your 116i if bottoming out is an issue for you.
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      05-08-2015, 02:52 AM   #27
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'Ditto' for the 125i M Sport on 18's
Mine does find the suspension stops when pushed hard through a high speed deep dip. Suspension still handles very well during this process.
I have Run flats on, so it may be different with the Michelin PSS non run flats as they are not as ridgid in the side walls.
Hopefully I can test that out in a few weeks time when I fit Michelin PSS non run flats on mine.
Aus - as per my post above + definitely ditch the RFT's, PSS's are superb !! BP
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      05-08-2015, 03:22 AM   #28
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Maybe but I have uprated springs and ARBs. No issues. Sounds like you might want to tweak the chassis of your 116i if bottoming out is an issue for you.
It is not really an issue, even though it happens now and then. Most cars I have had would sometimes bottom out. I would have liked the dampers to be slightly stiffer in the bounce stage. When the car was brand new, they were close to perfect, but now that they are worn in (around 35000 km), the dampers have become a bit too soft for my liking.

If I wanted to tune the car, I would also add some negative camber up front, but I think I will keep it completely stock, as it came from the factory.
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      05-08-2015, 03:33 AM   #29
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Bilstein B8 dampers work well with stock springs.

F8x M3/4 lower control arms is an OE part swap upgrade that adds about -1 deg camber each side at the front.

Here's a shot of them installed on my car - its the new, shiny part !!!

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      05-08-2015, 03:57 AM   #30
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Bilstein B8 dampers work well with stock springs.

F8x M3/4 lower control arms is an OE part swap upgrade that adds about -1 deg camber each side at the front.
I know. I could also upper strut mounts from the M135i to get a bit more negative camber on the 116i. I have very good experience with Bilstein shocks from previous cars. There has however been quite a lot of quality issues with their products over the last few years.
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      05-08-2015, 04:13 AM   #31
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hub carriers on m135i are fitted -0.5 deg swivel bearings as standard, don't think upper mounts will add more camber. Mx35i stock camber is circa 0.5 deg, from above swivel bearing
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      11-21-2016, 02:55 AM   #32
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Update

Front - M4 tension struts now installed to match M4 LCAs already installed. Puts wheel back more centrally into the wheel arch

Rear - now using style 397 8.5" et 47mm with oem MPSS 245-35-18 tyres.

Happy with both upgrades as may move to wider rear tyres when time to change worn rears..
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