BC Racing Coilover install and review - Page 6 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

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post #51 of 133 Old 23rd March 2011, 09:27 PM
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Originally Posted by leem5 View Post
Tim,

Thanks for the update. I've done a few miles with mine now and they are holding up to the job well, cannot fault the performance for the price. I have mine a little harder than you, running around 20 clicks from soft all round.

Lee
What spring rates do you have Lee? Here in blighty they sell with 5/6k springs. I bought a set of stiffer springs for mine but I've not yet fitted them, I know they will be better on track but..
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post #52 of 133 Old 23rd March 2011, 09:44 PM
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What spring rates do you have Lee? Here in blighty they sell with 5/6k springs. I bought a set of stiffer springs for mine but I've not yet fitted them, I know they will be better on track but..
Off the shelf RM (Inverted) ones. Mind I car is not an everyday car and is generally only used for drive outs with other exotica, so stiffness isn't an issue. Saying that it's by no means a harsh ride, no hard than an E46 M3 on 19's.

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post #53 of 133 Old 23rd March 2011, 09:50 PM
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I think the us kits go out the door with 8/6k springs. The uk kits all seem to have the softer spring rate. Mine is sett with about 23 clicks on the shocks I think, it's not overly stiff like that. Either way its a major upgrade over the worn out stock stuff, being able to lower the ride height is essential too!
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post #54 of 133 Old 23rd March 2011, 10:40 PM
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we get 6/5 here standard too.
i upped mine to 8/6. and have mine set 15 clicks all around.
i may soften it up a little more. but getting to the rear adjuster is a big PITA
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post #55 of 133 Old 24th March 2011, 11:17 PM
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Please can any of you guys confirm part numbers for these BC sets? I've been searching around tonight from UK sites, Larkspeed list separate kits for M5 and non-M5, whereas even the BC Racing UK site just shows E39. If I can't be sure I'm going to get the right ones, I can't even consider them. The BC Racing site actually shows he same SKU for both BR and RM - I-06.

Found these : BMW M5 BC Racing Coilovers - RM Series I-06-RM-MA Only £744.19, these are the RM's, for a reasonable price... Would these be the ones?

I'm also on 19's and it makes me a touch nervy that Timmay had such close clearance...Eeeek. Any 19'ers running these?

2001 E39 M5 : Silverstone Blue, 19" Breyton Spirits (horribly rashed...Genuine BBS LM's to go on), Philips Silverline Indicator Bulbs, Intravee II and Alpine KCA-420i (in a box in the house) and 160GB iPod Classic , Evolve headers and race cats to go on, otherwise standard at the mo...

"I look at it like this. Owning an M5 is kind of like dating a slamming hot big-t...ed blonde, who is a pain in the *****, drains your cash, but screws like there's no tomorrow. Owning a Honda Civic or the like, is akin to dating a girl who is fat, ugly, smells a bit where she shouldn't, is a cheap date and doesn't screw at all (you don't mind). So yeah, I'll take the blonde." (Courtsey of Jetpilot718)

The thread of my car and it's progression to mechanical perfection... : https://www.m5board.com/vbulletin/e39...ry-thread.html if I ever get around to anything...

Cabin Filters 6/3/11, Bosch wipers 21/5/11, OEM air filters 24/5/11 (110,920), Oil Change, Oil Seperators and Thermostat 07/08/11 (112,699), Final Stage Resistor, Coolant Temp Sensor, Silvered Indicator Bulbs 21/08/11 (114,110), Private Plate 23/10/11, Came home from storage 13/02/13
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post #56 of 133 Old 25th March 2011, 03:39 AM Thread Starter
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Quote:
Originally Posted by feeblebob View Post
Please can any of you guys confirm part numbers for these BC sets? I've been searching around tonight from UK sites, Larkspeed list separate kits for M5 and non-M5, whereas even the BC Racing UK site just shows E39. If I can't be sure I'm going to get the right ones, I can't even consider them. The BC Racing site actually shows he same SKU for both BR and RM - I-06.

Found these : BMW M5 BC Racing Coilovers - RM Series I-06-RM-MA Only £744.19, these are the RM's, for a reasonable price... Would these be the ones?

I'm also on 19's and it makes me a touch nervy that Timmay had such close clearance...Eeeek. Any 19'ers running these?

19" x what? Your width and offset will make all of the difference.......

Just call Tristan at Circuit Motorsports, tell him you want the same set up as me. I paid less than $1k for mine......

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Tim ~ email: HallmanTL (at) gmail (dot) com
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post #57 of 133 Old 25th March 2011, 10:35 AM
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Sorry Timmay, yes, I know the actual dimension are all important, the thing is I don't know what they are as they were on the car when I bought it... I'll have a browse today and see if I can find out, wheels are far too filthy currently to read off them, there's another recent post about working it out I think.

I have just found this : https://www.m5board.com/vbulletin/e39...h-warning.html and sent him a PM to ask if he knows. We seem to run similar, although he is running larger size on the front, likely rear size on the front as it states 275 front and 285 rear, whereas I am 245 and 275 respectively.

I emailed a dealer in the UK to ask what my options are and I got :

Hi Hamish,

BC don't differentiate between the M5 and normal E39 like they do for the E60 M5 and non M5 and not having much BMW knowledge I'm not sure if they'd fit or not, although I'd presume they would.

They only do one spring rate, and that is 6kg front and 5kg rear, although there is an option of the BR series or the RM series, which are an inverted coilover.

Unfortunately BC have pulled the VAT free promotion a week early due to overwhelming demand. Although I can offer a 12% discount off of rrp if paying via bank transfer, or 6% if paying via PayPal.

Best Regards
Nick Seager
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Circuit Motorsports emailed, mainly regarding shipping.

2001 E39 M5 : Silverstone Blue, 19" Breyton Spirits (horribly rashed...Genuine BBS LM's to go on), Philips Silverline Indicator Bulbs, Intravee II and Alpine KCA-420i (in a box in the house) and 160GB iPod Classic , Evolve headers and race cats to go on, otherwise standard at the mo...

"I look at it like this. Owning an M5 is kind of like dating a slamming hot big-t...ed blonde, who is a pain in the *****, drains your cash, but screws like there's no tomorrow. Owning a Honda Civic or the like, is akin to dating a girl who is fat, ugly, smells a bit where she shouldn't, is a cheap date and doesn't screw at all (you don't mind). So yeah, I'll take the blonde." (Courtsey of Jetpilot718)

The thread of my car and it's progression to mechanical perfection... : https://www.m5board.com/vbulletin/e39...ry-thread.html if I ever get around to anything...

Cabin Filters 6/3/11, Bosch wipers 21/5/11, OEM air filters 24/5/11 (110,920), Oil Change, Oil Seperators and Thermostat 07/08/11 (112,699), Final Stage Resistor, Coolant Temp Sensor, Silvered Indicator Bulbs 21/08/11 (114,110), Private Plate 23/10/11, Came home from storage 13/02/13

Last edited by feeblebob; 25th March 2011 at 10:45 AM.
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post #58 of 133 Old 25th March 2011, 02:14 PM Thread Starter
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If you are running 245's in the front, yo probably have 8 or 8.5" front wheels. Your offset should be set so rubbing against the shock body would not be an issue. Even if you do have rubbing issues, a simple spacer would fix the problem.

Which BC's are you inquiring about? I purchased the BR set, which what everyone is getting for their E39 M5 I believe. He states in his email that they do offer different spring rates for the BR series. I again, am pretty sure the non-M and the M E39 sets are identical.

The New Whip:
2003 Sterling Gray/Executive Caramel ///M5 (Name TBD)
~Coming soon! 5.3 LS Twin Turbo Swap. Just another LS swap, but with 2 snails.

The Storm Trooper:
2014 328i xDrive Msport Alpine White/Black Dakota (fully loaded)

~Bootmod3 stage 2~ER Downpipe~ER Charge pipe~BMS Intercooler~351M wheels

Tim ~ email: HallmanTL (at) gmail (dot) com
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post #59 of 133 Old 25th March 2011, 02:26 PM
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Quote:
Originally Posted by timmay77 View Post
If you are running 245's in the front, yo probably have 8 or 8.5" front wheels. Your offset should be set so rubbing against the shock body would not be an issue. Even if you do have rubbing issues, a simple spacer would fix the problem.

Which BC's are you inquiring about? I purchased the BR set, which what everyone is getting for their E39 M5 I believe. He states in his email that they do offer different spring rates for the BR series. I again, am pretty sure the non-M and the M E39 sets are identical.
First bit sounds good, not felt the urge to run rear sizes on the front. Yet

Second bit, have looked at both the BR and RM's and quite fancy the inverted shock, running larger rims than standard means I'll have increased by unsprung mass and I could probably do with getting a bit back. Apparently, the Spirits are a heavier rim than standard. As long as I know that there is no M-specific fitment, I'll be happy to not check for it.

Edit - Checked and you may have misread that, Timmay, I don't think they're offering different spring rates, just the fact there are two different coilover options, BR and RM. Semantics, nothing more

2001 E39 M5 : Silverstone Blue, 19" Breyton Spirits (horribly rashed...Genuine BBS LM's to go on), Philips Silverline Indicator Bulbs, Intravee II and Alpine KCA-420i (in a box in the house) and 160GB iPod Classic , Evolve headers and race cats to go on, otherwise standard at the mo...

"I look at it like this. Owning an M5 is kind of like dating a slamming hot big-t...ed blonde, who is a pain in the *****, drains your cash, but screws like there's no tomorrow. Owning a Honda Civic or the like, is akin to dating a girl who is fat, ugly, smells a bit where she shouldn't, is a cheap date and doesn't screw at all (you don't mind). So yeah, I'll take the blonde." (Courtsey of Jetpilot718)

The thread of my car and it's progression to mechanical perfection... : https://www.m5board.com/vbulletin/e39...ry-thread.html if I ever get around to anything...

Cabin Filters 6/3/11, Bosch wipers 21/5/11, OEM air filters 24/5/11 (110,920), Oil Change, Oil Seperators and Thermostat 07/08/11 (112,699), Final Stage Resistor, Coolant Temp Sensor, Silvered Indicator Bulbs 21/08/11 (114,110), Private Plate 23/10/11, Came home from storage 13/02/13

Last edited by feeblebob; 25th March 2011 at 02:28 PM.
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post #60 of 133 Old 25th March 2011, 02:53 PM
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Pulled the trigger on the BCs and should be installed next week. Having my shop do them - but would love to be able to tell them exactly how high. Anyone have a good recommendation on height settings?
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