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Discussion Starter · #1 ·
Hi, could anyone tell me which side is the correct amount of camber for the front of my m135i after fitting m4 lca and bilstein b12?

The camber was out on one side when I first took the car for an alignment when it was stock, I assumed the osf strut or hub was bent because 2 days after buying the car the original strut went through the hub when I was having a blast down some lanes.

The pinch bolt wasn't tightened due to whoever worked on the car before I bought it, so the dealer I got the car from agreed to pay for the repairs.

Since then I've replaced everything on the front with brand new lemforder parts.

The only thing I noticed when replacing parts was that the outer tie rod on the osf was slightly bent but everything else looked fine.

New top mounts
Bilstein b12 kit
Inner tie rods + ends
M4 lca + tension struts
2 front hub carriers off another m135i + wheel bearings
Drop links
Brembo discs and pads
New ps4 tyres

Everything looks fine but clearly something isnt right.












 

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Carld said:
Hi, could anyone tell me which side is the correct amount of camber for the front of my m135i after fitting m4 lca and bilstein b12?

The camber was out on one side when I first took the car for an alignment when it was stock, I assumed the osf strut or hub was bent because 2 days after buying the car the original strut went through the hub when I was having a blast down some lanes.

The pinch bolt wasn't tightened due to whoever worked on the car before I bought it, so the dealer I got the car from agreed to pay for the repairs.

Since then I've replaced everything on the front with brand new lemforder parts.

The only thing I noticed when replacing parts was that the outer tie rod on the osf was slightly bent but everything else looked fine.

New top mounts
Bilstein b12 kit
Inner tie rods + ends
M4 lca + tension struts
2 front hub carriers off another m135i + wheel bearings
Drop links
Brembo discs and pads
New ps4 tyres

Everything looks fine but clearly something isnt right.












1'53 is nearly 2 degrees so thats spot on 馃憤

1'60 is 2 basically, every 60 is 1 degree.
 

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Discussion Starter · #4 ·
Ah right okay I'm just reading it wrong then. I thought the nsf being -2.16 and the osf being -1.53 was a massive difference. Thanks for letting me know 馃挭
 

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Carld said:
Ah right okay I'm just reading it wrong then. I thought the nsf being -2.16 and the osf being -1.53 was a massive difference. Thanks for letting me know 馃挭
No probz buddy, hows it feel with the extra camber up front?
 

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Discussion Starter · #6 ·
It feels great round low speed corners, it turns in and just grips but high speed bends and even in a straight line the car feels very floaty, it weaves about a fair bit and to be honest it's not nice at all.

Braking from high speed the car is all over the place, it's scares me sometimes not gonna lie haha. I've come from a very well setup mk3 mx5 that was just unreal on the bends and brakes, not many cars would keep up with that at the few track days I did.

Maybe my problem with the m135i is that im comparing it to much to the mx5 handling wise.
 

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It feels great round low speed corners, it turns in and just grips but high speed bends and even in a straight line the car feels very floaty, it weaves about a fair bit and to be honest it's not nice at all.

Braking from high speed the car is all over the place, it's scares me sometimes not gonna lie haha.
I have exactly the same setup as you and I feel the same about it. It wanders everywhere. Feels unstable at high speeds and under braking. The back also squats down under hard acceleration and makes the front end light. I also find that if I let the car roll forward a little bit from a standstill and then come to a stop again - it bounces momentarily and takes a while to settle.

I thought it was just me but clearly not if you're also finding the same. It's bothering me so much that I considered putting it back to stock or trying a Bilstein B16 kit or KW V3.

Is it because of the damping or maybe the spring rates being different from standard? Maybe someone with more knowledge will know.
 

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I think because shorter bump stops used,on oem bumpstops they are used as a secondary to help low spring rates.Yes crashy but as designed on BMW using very short dampers at front.eg My s2000 has 10k front and rear :rolleyes: bumpstops do not engage like BMWs .
Was looking at coilovers tbh but as car is a work horse =拢s and meister are a 12 week wait atm.(n)
 

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I have exactly the same setup as you and I feel the same about it. It wanders everywhere. Feels unstable at high speeds and under braking. The back also squats down under hard acceleration and makes the front end light. I also find that if I let the car roll forward a little bit from a standstill and then come to a stop again - it bounces momentarily and takes a while to settle.

I thought it was just me but clearly not if you're also finding the same. It's bothering me so much that I considered putting it back to stock or trying a Bilstein B16 kit or KW V3.

Is it because of the damping or maybe the spring rates being different from standard? Maybe someone with more knowledge will know.
hello mate,
If you are saying when you creep forward on a flat surface and the car 鈥渂ounces鈥 a little after bringing the vehicle to a stop again that would concern me.
I would suspect the installation of the control arms wasn鈥檛 done properly.
maybe the torquing procedure was done incorrectly.
the car needs to be on the ground when tightening up both sets of arms, or at least the front wheels jacked up to actual driving height before tightening sequence.
 

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Definitely sounds like the controls arms weren't tightened at the correct ride height.

Note there is no standard front camber adjustment on the 1, 2, 3 and 4 Fxx series cars. Due to slight differences in body construction there are 3 different hubs that are fitted from the factory to meet BMW camber spec, one with neutral camber, one with positive and the other one negative. If you ever swap these hubs check the part number on RealOEM and make sure you match the correct type of hub to the one you are replacing.

Powerflex do camber adjustable control arm bushes, if things get tricky.
 
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