A Closer Look At The BC Racing F30 Coilover Suspension

Jera_Jakerz · 02-18-2015, 08:03 AM

Quote:

Originally Posted by Precision-sport

Thank you f30luxline for your assistance in this thread!

The BC kits allow you to adjust height without sacrificing shock travel, unlike many other coilover manufacturers. They also allow you to adjust preload if you really want to fine tune handling.

First adjust the spring to the desired height and then adjust the shock afterwards. If you're raising your car you may find it easier to lengthen the shock before you adjust the spring height. If lowering your car, you should adjust the spring perch and then proceed to dial in the spring preload afterwards.

If you think it will take a few tries to get the rear height at a level you're comfortable with, you can lengthen the shock a bit, play with ride heights, and then set the final preload once you're happy with the ride height.

The adjustment is doable without removing any of the control arm bolts. If the coilovers have been on your car for a while there may be some dirt buildup on the threads that should be cleaned off before adjusting.

Still no response on APO? Any reason for not having "Swift springs"?

Sean@PSI · 02-18-2015, 08:30 AM

Quote:

Originally Posted by Jera_Jakerz

Still no response on APO? Any reason for not having "Swift springs"?

PMed.

Sean@PSI · 02-18-2015, 08:33 AM

Quote:

Originally Posted by Jera_Jakerz

Went to purchase, but it does not look like you have an option for APO / AE...PM invoice if you rather.

We can absolutely ship to APO/DPO/FPO addresses. I just sent you a PM.

cfm56d7b · 02-18-2015, 10:16 AM

Sean,

I am almost ready to order this kit for my 2013 BMW 335i xDrive.

Can anyone recommend an experienced installer in Orange County, CA?

obriennathaniel · 02-18-2015, 12:37 PM

what are swift springs?

f30luxline · 02-18-2015, 12:51 PM

Quote:

Originally Posted by obriennathaniel

what are swift springs?

http://www.swiftsprings.net/

There an optional spring that is offered with higher and/or custom springs rates.

Sean@PSI · 02-18-2015, 01:16 PM

Quote:

Originally Posted by cfm56d7b

Sean,

I am almost ready to order this kit for my 2013 BMW 335i xDrive.

Can anyone recommend an experienced installer in Orange County, CA?

Auto Talent

EAS

PM me with any other questions.

cfm56d7b · 02-19-2015, 10:04 AM

Sean,

One more question: are front and rear camber plates included with BR kit (for x drive F30 models)?

f30luxline · 02-19-2015, 11:12 AM

Quote:

Originally Posted by cfm56d7b

Sean,

One more question: are front and rear camber plates included with BR kit (for x drive F30 models)?

Quote:

Originally Posted by Sean@PSI

Auto Talent

EAS

PM me with any other questions.

Rear camber plates are not available for the F30. Fronts, Yes.

Sean@PSI · 02-19-2015, 11:13 AM

Quote:

Originally Posted by cfm56d7b

Sean,

One more question: are front and rear camber plates included with BR kit (for x drive F30 models)?

Front Camber plates, yes, rears use stock bushing/mounting.

obriennathaniel · 02-23-2015, 09:21 AM

So I have my front coilovers installed, do I need to adjust the spring compression according to ride height? I want a soft ride, so I'm thinking I can leave the springs with almost no tension, am I correct?

Sean@PSI · 02-23-2015, 09:31 AM

Quote:

Originally Posted by obriennathaniel

So I have my front coilovers installed, do I need to adjust the spring compression according to ride height? I want a soft ride, so I'm thinking I can leave the springs with almost no tension, am I correct?

You need to make sure there is a MINIMUM of 4MM preload on the spring to make sure the spring does not make noise once on the car.

tboooe · 02-23-2015, 09:31 AM

Quote:

Originally Posted by obriennathaniel

So I have my front coilovers installed, do I need to adjust the spring compression according to ride height? I want a soft ride, so I'm thinking I can leave the springs with almost no tension, am I correct?

Oh nice! Pics please!

obriennathaniel · 02-23-2015, 09:40 AM

Quote:

Originally Posted by Sean@PSI

You need to make sure there is a MINIMUM of 4MM preload on the spring to make sure the spring does not make noise once on the car.

How much does it come with from the factory? Cuz that's where they're at. I havnt driven it yet, just put it back in the garage till I have enoug time to do the rears. Hell I didn't even check to see if they were both the same. Guess I'll do that next

obriennathaniel · 02-23-2015, 09:41 AM

Quote:

Originally Posted by tboooe

Oh nice! Pics please!

I will when I'm done. I want to get it the exact height that's in my sig pic, which is H&R super sports.

Sean@PSI · 02-24-2015, 04:50 PM

Quote:

Originally Posted by obriennathaniel

How much does it come with from the factory? Cuz that's where they're at. I havnt driven it yet, just put it back in the garage till I have enoug time to do the rears. Hell I didn't even check to see if they were both the same. Guess I'll do that next

It is based upon the height you have set it, once the height is set you can add preload.

f30luxline · 02-24-2015, 06:48 PM

Quote:

Originally Posted by Sean@PSI

It is based upon the height you have set it, once the height is set you can add preload.

This is partially incorrect. It doesn't matter which adjustment is set first but adjusting preload after ride height will change the ride height.

The typical daily driver isn't concerned with tracking the car. With the said the baseline preload of 4mm is sufficient, set it and forget it but set it first.

track_warrior · 02-24-2015, 11:48 PM

Do they make them for the F31?

Sean@PSI · 02-25-2015, 01:05 PM

Quote:

Originally Posted by track_warrior

Do they make them for the F31?

We are working on that now.

Sean@PSI · 02-25-2015, 01:06 PM

Quote:

Originally Posted by f30luxline

This is partially incorrect. It doesn't matter which adjustment is set first but adjusting preload after ride height will change the ride height.

The typical daily driver isn't concerned with tracking the car. With the said the baseline preload of 4mm is sufficient, set it and forget it but set it first.

Thank you for clarifying. I will be posting a short video on preload and adjustment for these coils soon, to prevent confusion.

obriennathaniel · 02-25-2015, 02:17 PM

Quote:

Originally Posted by f30luxline

This is partially incorrect. It doesn't matter which adjustment is set first but adjusting preload after ride height will change the ride height.

The typical daily driver isn't concerned with tracking the car. With the said the baseline preload of 4mm is sufficient, set it and forget it but set it first.

Quote:

Originally Posted by Sean@PSI

Thank you for clarifying. I will be posting a short video on preload and adjustment for these coils soon, to prevent confusion.

Sweet! sounds simple enough.

track_warrior · 02-25-2015, 03:38 PM

Quote:

Originally Posted by Sean@PSI

We are working on that now.

Awesome, please tell them to not make them extremely low and a bit stiffer than the kw v1's. And please put me on the waiting list, i would gladly pick up a set.

02-18-2015, 10:16 AM	#70
cfm56d7b Lieutenant General 5876 Rep 10,252 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Sean, I am almost ready to order this kit for my 2013 BMW 335i xDrive. Can anyone recommend an experienced installer in Orange County, CA?
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02-18-2015, 12:37 PM	#71
obriennathaniel @obriennathaniel_f30 on Instagram 515 Rep 1,063 Posts Drives: 582whp/596wtq '13 335i Join Date: Jan 2014 Location: Houston,Tx ig:obriennathaniel_f30 iTrader: (0)	what are swift springs? __________________ CG Precision VS-1 Exhaust\DR-1 DownPipe \| PS2 Turbo\Inlet \| PDU PI w/Fuel-it platinum kit & E sensor \| GFB DV+ Diverter Valve \| BM3 w/AIC2-V\|Tune CaryTheLabelGuy \| Full E85 \| ATM FMIC \| ER Chargepipe Inlet/Outlet \| AFE Intake \| BC Coilovers \| PSS 255/40-275/35 Velos Designwerks S3 two piece 19x9/19x10 \| Osram Xenarc \| LED retro \| AWRON digital AC gauge\|
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02-19-2015, 10:04 AM	#74
cfm56d7b Lieutenant General 5876 Rep 10,252 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Sean, One more question: are front and rear camber plates included with BR kit (for x drive F30 models)?
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02-23-2015, 09:21 AM	#77
obriennathaniel @obriennathaniel_f30 on Instagram 515 Rep 1,063 Posts Drives: 582whp/596wtq '13 335i Join Date: Jan 2014 Location: Houston,Tx ig:obriennathaniel_f30 iTrader: (0)	So I have my front coilovers installed, do I need to adjust the spring compression according to ride height? I want a soft ride, so I'm thinking I can leave the springs with almost no tension, am I correct?
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02-24-2015, 11:48 PM	#84
track_warrior Captain 98 Rep 728 Posts Drives: F80 M3 Join Date: Oct 2010 Location: Merida, Yucatan iTrader: (1)	Do they make them for the F31? __________________ Compensating a heavy car with horsepower is like giving an alcoholic cocaine to sober him up...
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