Robbing the F8x M3 M4 for suspension parts

DVC · 02-18-2015, 06:35 PM

Quote:

Originally Posted by HP Autosport

Camber would be the only setting changed here. All other settings were within factory specs and the car drives great with more eagerness to turn-in. My customer is hoping to have reduced outer shoulder wear on his tires, which the additional -0.5 of camber should help as well.

Thanks Harold! When do you think you'll be able to confirm if the F8x tension strut (part #9 in the diagram) will work on the F30? If it does, I'd like to do them both together...

HP Autosport · 02-19-2015, 12:27 PM

Quote:

Originally Posted by DVC

Thanks Harold! When do you think you'll be able to confirm if the F8x tension strut (part #9 in the diagram) will work on the F30? If it does, I'd like to do them both together...

F8x M thrust arms are currently on back order from Germany so as soon as they arrive we will be able to perform the R&D. Having to park my F80 M3 for weeks without the thrust arms wasn't part of the R&D.

DVC · 02-19-2015, 01:29 PM

Quote:

Originally Posted by HP Autosport

F8x M thrust arms are currently on back order from Germany so as soon as they arrive we will be able to perform the R&D. Having to park my F80 M3 for weeks without the thrust arms wasn't part of the R&D.

Well, that's certainly understandable!!
Dinan is now selling monoball kits to replace the tension strut hydrobearing... but at $500/pair, I'd prefer to just buy a couple ~$185 OEM F8x tension struts instead - if they'll work.

HP Autosport · 02-19-2015, 02:23 PM

Quote:

Originally Posted by DVC

Well, that's certainly understandable!!
Dinan is now selling monoball kits to replace the tension strut hydrobearing... but at $500/pair, I'd prefer to just buy a couple ~$185 OEM F8x tension struts instead - if they'll work.

Do you really want monoball for a street car? Not me.

DVC · 02-19-2015, 02:46 PM

Quote:

Originally Posted by HP Autosport

Do you really want monoball for a street car? Not me.

Dinan says they are DD-friendly. I've seen a few early reviews indicating same... but again, I'd really rather buy the OEM F8x tension struts from you - if they'll work!

HP Autosport · 02-19-2015, 04:01 PM

Quote:

Originally Posted by DVC

Dinan says they are DD-friendly. I've seen a few early reviews indicating same... but again, I'd really rather buy the OEM F8x tension struts from you - if they'll work!

That is interesting. The reviewers must have a very high tolerance to NVH. I know I don't for my DD. However, if it were a track only car, I would do definitely do it without a question.

marco_polo · 02-22-2015, 11:57 AM

Thanks for all your R&D work so far.

Any joy fitting these to an M235i yet?

romanonj · 02-22-2015, 04:00 PM

i had done this on my e92 and loved the steering feel. Are xdrive lower control arm same?

HP Autosport · 02-23-2015, 11:43 AM

Quote:

Originally Posted by marco_polo

Thanks for all your R&D work so far.

Any joy fitting these to an M235i yet?

A forum member and us are working together on that. These F8x arms are hard to get at this time, but we are hoping to get them soon and post our findings. Thanks.

Quote:

Originally Posted by romanonj

i had done this on my e92 and loved the steering feel. Are xdrive lower control arm same?

Likely no, just like on the E9x i and xi.

DVC · 03-04-2015, 08:02 PM

Quote:

Originally Posted by HP Autosport

F8x M thrust arms are currently on back order from Germany so as soon as they arrive we will be able to perform the R&D. Having to park my F80 M3 for weeks without the thrust arms wasn't part of the R&D.

Hi Harold,
Have you received the F8x thrust arms yet? If so, will they work on an F30?

Bee Pee · 03-05-2015, 01:33 AM

Reading the last post on the thread below, seems like there's not much to be gained from fitting F8x TS.

http://www.2addicts.com/forums/showt...1079766&page=2

HP Autosport · 03-05-2015, 11:42 AM

Quote:

Originally Posted by DVC

Hi Harold,
Have you received the F8x thrust arms yet? If so, will they work on an F30?

No, not yet. I have been busy and the R&D car is not available.

Bee Pee · 03-16-2015, 08:52 AM

See link below to Babybmw site here in the UK, towards end of 5th page.

F8x lower control arms installed ok on an m135i (hatchback version of m235i)
http://www.babybmw.net/forum/viewtop...69818&start=60

HP Autosport · 03-16-2015, 10:27 PM

Quote:

Originally Posted by Bee Pee

See link below to Babybmw site here in the UK, towards end of 5th page.

F8x lower control arms installed ok on an m135i (hatchback version of m235i)
http://www.babybmw.net/forum/viewtop...69818&start=60

Excellent work!

scott@bmwhn · 03-17-2015, 06:16 PM

Nice to see some cross compatibility, especially since it provides some much needed negative camber. I bet this would pair nicely with the OE -30min front knuckles

-Scott

Bee Pee · 03-17-2015, 07:12 PM

Scott

Yes, the m135i here in UK comes with -0.5 deg knuckles as standard.

BP

HP Autosport · 03-17-2015, 10:06 PM

Quote:

Originally Posted by Bee Pee

Scott

Yes, the m135i here in UK comes with -0.5 deg knuckles as standard.

BP

So it's official! M135i and M235i will accept F8x wishbones as well!

Bee Pee · 04-01-2015, 01:56 PM

Harold - Yes, installed and all good. F8x LCAs installed on my m135i by Birds in the UK.

Before - NSF

After - NSF

Before - NSF

After - NSF

Before - OSF

After - OSF

Tracking adjusted but ran out of time to get L & R camber changes checked but it's circa an extra 1 deg negative. Will get alignment re checked in a couple weeks.

Stance looks even better IMHO with a v slight extra poke ie wheel faces more flush with wheel arch. No rubbing even with 8" wide et34mm wheels.

Initial feel is good but only driven round the 'burbs so looking fwd to my blat up to N Wales this w/end.

BP

HP Autosport · 04-01-2015, 05:38 PM

Quote:

Originally Posted by Bee Pee

Harold - Yes, installed and all good. F8x LCAs installed on my m135i by Birds in the UK.

Tracking adjusted but ran out of time to get L & R camber changes checked but it's circa an extra 1 deg negative. Will get alignment re checked in a couple weeks.

Stance looks even better IMHO with a v slight extra poke ie wheel faces more flush with wheel arch. No rubbing even with 8" wide et34mm wheels.

Initial feel is good but only driven round the 'burbs so looking fwd to my blat up to N Wales this w/end.

BP

I know Kevin and James Bird very well!

Bee Pee · 04-02-2015, 02:43 AM

Got early this morning and took a detour for a blast on my way into work.

Turn-in on my car was already very good and now "feels" better as a result of slight change in castor angle. There's definitely more weight to the comfort mode steering immediately off centre [not quite as much as switching from comfort to sport mode] and sport mode steering is much, much meatier = better in my book. Despite this, it's not "darty" or fussy at all in straight line.

No extra NVH noticeable as a result of the sturdy bushes on F8x LCA's.

TBH I was not sure about the slightly extra poke to front wheels in terms of looks and if it would rub. Having driven a mix of different roads & looked again this morning, it's growing on me. Took some dips and crests at a reasonable clip and no rubbing at all. Roads were wet/damp so drove to the conditions and Mich PSS's were excellent.

Hoping for some dry roads in N Wales this weekend.....

HP Autosport · 04-02-2015, 07:41 PM

How about camber plates for your F2x or F3x using stock profile springs or any coilovers using stock upper mounts?

Should I start another thread?

Bee Pee · 04-05-2015, 03:44 PM

UPDATE:-

Managed to sneak out 1st thing to meet up with Cayman S driving chum for a fast thrash round evo triangle.

Hence grubby car. One slight-ish issue I have is my wider/et34mm front wheels are positioned slight further forward in relation to wheel arch. On v fast bumps it rubs at about the one o clock position in the photo below. Bit of a dilemma as I really like the grippier front end and steering feel.

As a comparison, front wheel position in wheel arch pre F8x LCA install

02-22-2015, 11:57 AM	#29
marco_polo Registered 0 Rep 3 Posts Drives: BMW M135i Join Date: Feb 2015 Location: Kent, UK iTrader: (0)	Thanks for all your R&D work so far. Any joy fitting these to an M235i yet?
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02-22-2015, 04:00 PM	#30
romanonj Major 145 Rep 1,319 Posts Drives: F80 DCT Join Date: Jan 2012 Location: New Jersey, Ocean County iTrader: (18)	i had done this on my e92 and loved the steering feel. Are xdrive lower control arm same? __________________ 2016 F80 M3 BSM with Black interior DCT/Driver Assistance/Executive/LEDs/Adaptive/Black Wheels 2014 F32 435i xDrive AW/CR 2014 F25 X3 M-Sport Carbon Black 2011 e92 335is 2007 X3 122k miles 2006 e90 330i 132k miles
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03-05-2015, 01:33 AM	#33
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Reading the last post on the thread below, seems like there's not much to be gained from fitting F8x TS. http://www.2addicts.com/forums/showt...1079766&page=2
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03-16-2015, 08:52 AM	#35
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	See link below to Babybmw site here in the UK, towards end of 5th page. F8x lower control arms installed ok on an m135i (hatchback version of m235i) http://www.babybmw.net/forum/viewtop...69818&start=60 Last edited by Bee Pee; 03-16-2015 at 09:13 AM..
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03-17-2015, 06:16 PM	#37
scott@bmwhn Major 132 Rep 1,245 Posts Drives: Msport X3 Join Date: Mar 2008 Location: Houston iTrader: (3)	Nice to see some cross compatibility, especially since it provides some much needed negative camber. I bet this would pair nicely with the OE -30min front knuckles -Scott __________________ 03' 525iT stick, 22' 530i Previous: 20' X3 M40i, 19' 740i Msport, 17' 430i GC, 15' Msport X3 28i, 15' Sportline X1 28i, 13' Msport 328i, 09' Msport 335i, 07' Msport 335i
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03-17-2015, 07:12 PM	#38
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Scott Yes, the m135i here in UK comes with -0.5 deg knuckles as standard. BP
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04-01-2015, 01:56 PM	#40
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Harold - Yes, installed and all good. F8x LCAs installed on my m135i by Birds in the UK. Before - NSF After - NSF Before - NSF After - NSF Before - OSF After - OSF Tracking adjusted but ran out of time to get L & R camber changes checked but it's circa an extra 1 deg negative. Will get alignment re checked in a couple weeks. Stance looks even better IMHO with a v slight extra poke ie wheel faces more flush with wheel arch. No rubbing even with 8" wide et34mm wheels. Initial feel is good but only driven round the 'burbs so looking fwd to my blat up to N Wales this w/end. BP Last edited by Bee Pee; 04-06-2015 at 03:37 AM..
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04-02-2015, 02:43 AM	#42
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Got early this morning and took a detour for a blast on my way into work. Turn-in on my car was already very good and now "feels" better as a result of slight change in castor angle. There's definitely more weight to the comfort mode steering immediately off centre [not quite as much as switching from comfort to sport mode] and sport mode steering is much, much meatier = better in my book. Despite this, it's not "darty" or fussy at all in straight line. No extra NVH noticeable as a result of the sturdy bushes on F8x LCA's. TBH I was not sure about the slightly extra poke to front wheels in terms of looks and if it would rub. Having driven a mix of different roads & looked again this morning, it's growing on me. Took some dips and crests at a reasonable clip and no rubbing at all. Roads were wet/damp so drove to the conditions and Mich PSS's were excellent. Hoping for some dry roads in N Wales this weekend..... __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
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04-02-2015, 07:41 PM	#43
HP Autosport Supreme Allied Commander 3814 Rep 54,307 Posts Drives: F80 M3 Join Date: Mar 2007 Location: Santa Barbara, AP, Brembo, GIAC, Koni, Ohlins, Performance Friction, www.hpautosport.com iTrader: (36)	How about camber plates for your F2x or F3x using stock profile springs or any coilovers using stock upper mounts? Should I start another thread? Last edited by HP Autosport; 04-02-2015 at 07:56 PM..
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04-05-2015, 03:44 PM	#44
Bee Pee Brigadier General 1774 Rep 4,510 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	UPDATE:- Managed to sneak out 1st thing to meet up with Cayman S driving chum for a fast thrash round evo triangle. Hence grubby car. One slight-ish issue I have is my wider/et34mm front wheels are positioned slight further forward in relation to wheel arch. On v fast bumps it rubs at about the one o clock position in the photo below. Bit of a dilemma as I really like the grippier front end and steering feel. As a comparison, front wheel position in wheel arch pre F8x LCA install __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI.. Last edited by Bee Pee; 04-06-2015 at 02:01 AM..
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