KMAC Camber Kit

classic_erik · 03-02-2020, 08:23 PM

Has anyone installed these adjustable camber bushings?

https://www.ecstuning.com/b-kmac-par...s/193826k~kma/

Having serious issues with rear negative camber post coilover install and looking at options as it is impacting my ride quality. Getting another realignment next week to see if they can do better after everything has settled.

yewlock · 03-02-2020, 10:02 PM

Sorry to hear about the ride quality. Will you tell us in details?

X5Guy · 03-03-2020, 09:21 PM

I see so many lowered X5s on this forum but never hear about camber or toe issues. Can you post up your alignment results?

1norseman · 03-04-2020, 07:41 AM

I noticed the price, and was looking for the platinum plating of parts, and alcantara lined gift box..

Despite the way high cost, might be worth it on lowered vehicles, where the rear wheels negative camber is really noticeable...

Nice find!

classic_erik · 03-04-2020, 08:52 AM

Quote:

Originally Posted by X5Guy

I see so many lowered X5s on this forum but never hear about camber or toe issues. Can you post up your alignment results?

Here are the results at install, but the rear is exponentially worse since the setup settled close to an inch. Not sure would it would be reading now but will be back in the shop Monday.

classic_erik · 03-04-2020, 10:33 AM

Quote:

Originally Posted by yewlock

Sorry to hear about the ride quality. Will you tell us in details?

Hey, it could be completely unrelated to rear camber. Just trying to think of what's going on.

The issue is definitely in the rear. Even while driving on a completely flat surface, it feels like the car is skipping. Either my wheels are ovals or there is something going on with the setup.

1norseman · 03-05-2020, 09:58 AM

Quote:

Originally Posted by classic_erik

Hey, it could be completely unrelated to rear camber. Just trying to think of what's going on.

The issue is definitely in the rear. Even while driving on a completely flat surface, it feels like the car is skipping. Either my wheels are ovals or there is something going on with the setup.

If wheels are out of round, you should feel a vibration when driving on the highway.
What does the tires look like, how many miles on them, any cupping?
At what speed does it feel like car is skipping?

classic_erik · 03-05-2020, 10:01 AM

Quote:

Originally Posted by 1norseman

Quote:

Originally Posted by classic_erik

Hey, it could be completely unrelated to rear camber. Just trying to think of what's going on.

The issue is definitely in the rear. Even while driving on a completely flat surface, it feels like the car is skipping. Either my wheels are ovals or there is something going on with the setup.

If wheels are out of round, you should feel a vibration when driving on the highway.
What does the tires look like, how many miles on them, any cupping?
At what speed does it feel like car is skipping?

The wheels and tires are brand new / perfectly balanced and installed 1 day before the coilovers.

The skipping is immediate (it's noticeable even backing out of my garage). It gets better at high speeds but is still noticeable.

BobBeau · 03-06-2020, 05:57 AM

Who did the mounting and balancing? Were they road force balanced?

1norseman · 03-06-2020, 06:17 AM

Quote:

Originally Posted by classic_erik

The wheels and tires are brand new / perfectly balanced and installed 1 day before the coilovers.

The skipping is immediate (it's noticeable even backing out of my garage). It gets better at high speeds but is still noticeable.

OK, weird.

Sucks those bushings are pricey, but it might be worth giving them a try?!
I'm lowered by quite a bit, so I have same issue with more negative camber at the rear. but I do not have any issues with skipping.

I'm thinking if nothing else, those bushings might make the rear tires last a bit longer, and not make inside look wore out when outside is still perfectly fine.
That by itself, could make them worth it?

Good luck with new alignment!

wearenh · 03-06-2020, 10:22 AM

Quote:

Originally Posted by classic_erik

...The wheels and tires are brand new...

Brand new OEM or brand new aftermarket? ... I'm thinking the hubcentric rings are the wrong ID or were forgotten when installing wheels, and as a result they are not centered on the hub.

mikew2069 · 03-06-2020, 11:52 AM

Quote:

Originally Posted by classic_erik

Even while driving on a completely flat surface, it feels like the car is skipping. Either my wheels are ovals or there is something going on with the setup.

Can you try and explain the sensation in a different way? I'm having a hard time imagining what skipping would be like? Like losing traction or more like when there is an imperfection in the road, the tire slams down on the ground?

MizikeTSK · 03-06-2020, 01:25 PM

Hub bearing?

smashe · 03-06-2020, 01:35 PM

Put stock wheels back on and go for a ride. Eliminate the possibility of your new wheel tire setup being at fault.

classic_erik · 03-06-2020, 03:41 PM

My new wheels were custom, and road forced balanced. They were perfect the 2 days leading up to my coilover install. No issues whatsoever with the wheels or tires.

Let me clarify the sensation - it's more like driving over a bunch of non stop little speed bumps or an uneven road. It's 100% related to the coilover install, whether it's improper loading of the rear springs, issues with the existing bushings or control arms or severe negative camber.

mikew2069 · 03-06-2020, 03:51 PM

Quote:

Originally Posted by classic_erik

My new wheels were custom, and road forced balanced. They were perfect the 2 days leading up to my coilover install. No issues whatsoever with the wheels or tires.

Let me clarify the sensation - it's more like driving over a bunch of non stop little speed bumps or an uneven road. It's 100% related to the coilover install, whether it's improper loading of the rear springs, issues with the existing bushings or control arms or severe negative camber.

Is the feeling accompanied by any noise? Rattling/clanking?

Do you know for sure if they pre-loaded the rear shocks? If there's not rattling noise, I'm fairly confident that this is the issue.

classic_erik · 03-06-2020, 03:52 PM

Quote:

Originally Posted by mikew2069

Quote:

Originally Posted by classic_erik

My new wheels were custom, and road forced balanced. They were perfect the 2 days leading up to my coilover install. No issues whatsoever with the wheels or tires.

Let me clarify the sensation - it's more like driving over a bunch of non stop little speed bumps or an uneven road. It's 100% related to the coilover install, whether it's improper loading of the rear springs, issues with the existing bushings or control arms or severe negative camber.

Is the feeling accompanied by any noise? Rattling/clanking?

Do you know for sure if they pre-loaded the rear shocks? If there's not rattling noise, I'm fairly confident that this is the issue.

No rattling.

Btw that's what the theory was from the BC Racing tech support.

cashzhang87 · 03-06-2020, 05:13 PM

Don't buy any coliovers for x5s but Except kw and bilstein! You will pay a lot for it！

Absolute experience on me

I know you bought BC!

The requirements for x5 suspension are very strict!

look luck! bro

classic_erik · 03-06-2020, 07:13 PM

Quote:

Originally Posted by cashzhang87

Don't buy any coliovers for x5s but Except kw and bilstein! You will pay a lot for it！

Absolute experience on me

I know you bought BC!

The requirements for x5 suspension are very strict!

look luck! bro

Ok bro

mikew2069 · 03-07-2020, 05:34 AM

Quote:

Originally Posted by cashzhang87

Don't buy any coliovers for x5s but Except kw and bilstein! You will pay a lot for it！

Absolute experience on me

I know you bought BC!

The requirements for x5 suspension are very strict!

look luck! bro

There are other options out there that work.

mikew2069 · 03-07-2020, 05:35 AM

Quote:

Originally Posted by classic_erik

No rattling.

Btw that's what the theory was from the BC Racing tech support.

Yup, I’ll bet ya a beer they didn’t.

Is this a shop that you’ve dealt with in the past? Reputable?

fr_tz · 03-07-2020, 08:10 AM

Hope you get this figured out...thanks for being first with the BC kit.

03-02-2020, 08:23 PM	#1
classic_erik Lieutenant Colonel 2809 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	KMAC Camber Kit Has anyone installed these adjustable camber bushings? https://www.ecstuning.com/b-kmac-par...s/193826k~kma/ Having serious issues with rear negative camber post coilover install and looking at options as it is impacting my ride quality. Getting another realignment next week to see if they can do better after everything has settled. __________________ My F15 50i M Sport Build Thread
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03-02-2020, 10:02 PM	#2
yewlock Major 698 Rep 1,092 Posts Drives: X5 Join Date: Dec 2017 Location: Bay Area, CA iTrader: (1)	Sorry to hear about the ride quality. Will you tell us in details?
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03-03-2020, 09:21 PM	#3
X5Guy Second Lieutenant 106 Rep 250 Posts Drives: X5 Join Date: Jun 2017 Location: DFW iTrader: (0)	I see so many lowered X5s on this forum but never hear about camber or toe issues. Can you post up your alignment results?
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03-04-2020, 07:41 AM	#4
1norseman Captain 398 Rep 648 Posts Drives: X5 50i Join Date: Sep 2017 Location: Pavement iTrader: (0)	I noticed the price, and was looking for the platinum plating of parts, and alcantara lined gift box.. Despite the way high cost, might be worth it on lowered vehicles, where the rear wheels negative camber is really noticeable... Nice find!
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03-06-2020, 05:57 AM	#9
BobBeau Second Lieutenant 174 Rep 274 Posts Drives: X5 50i Join Date: Dec 2011 Location: I'd rather be in Montana iTrader: (0)	Who did the mounting and balancing? Were they road force balanced?
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		BMW X5 and X6 Forum (F15/F16) > BMW X5 (F15) and BMW X6 (F16) Forum > BMW X5 and X6 (F15/F16) Forum
KMAC Camber Kit

03-06-2020, 01:25 PM	#13
MizikeTSK Second Lieutenant 144 Rep 264 Posts Drives: 2015 XDrive 50i MSport Join Date: Oct 2011 Location: San Diego iTrader: (0)	Hub bearing? __________________ 2015 F15 XDrive 50i MSport
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03-06-2020, 01:35 PM	#14
smashe Private First Class 29 Rep 161 Posts Drives: 2018 M3 competition 2016 x5 35 Join Date: Nov 2019 Location: PENNSYLVANIA iTrader: (0)	Put stock wheels back on and go for a ride. Eliminate the possibility of your new wheel tire setup being at fault.
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03-06-2020, 03:41 PM	#15
classic_erik Lieutenant Colonel 2809 Rep 1,859 Posts Drives: 23' X7 40i M Sport Join Date: Jan 2019 Location: South Shore, MA iTrader: (12) Garage List 2023 BMW X7 40i M S ... [0.00] 2020 Audi SQ5 [0.00]	My new wheels were custom, and road forced balanced. They were perfect the 2 days leading up to my coilover install. No issues whatsoever with the wheels or tires. Let me clarify the sensation - it's more like driving over a bunch of non stop little speed bumps or an uneven road. It's 100% related to the coilover install, whether it's improper loading of the rear springs, issues with the existing bushings or control arms or severe negative camber. __________________ My F15 50i M Sport Build Thread
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03-06-2020, 05:13 PM	#18
cashzhang87 Private 14 Rep 83 Posts Drives: G80 M3 Competition Xdrive Join Date: Mar 2019 Location: new york iTrader: (0)	Don't buy any coliovers for x5s but Except kw and bilstein! You will pay a lot for it！ Absolute experience on me I know you bought BC! The requirements for x5 suspension are very strict! look luck! bro
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03-07-2020, 08:10 AM	#22
fr_tz First Lieutenant 497 Rep 328 Posts Drives: F90/G05 50e Join Date: Nov 2018 Location: NJ iTrader: (3) Garage List 2024 G05 50e [9.50]	Hope you get this figured out...thanks for being first with the BC kit.
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