BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Track / Autocross / Dragstrip / Driving Techniques
 
Post Reply
 
Thread Tools Search this Thread
      12-19-2018, 07:09 AM   #67
kyrix1st
Colonel
kyrix1st's Avatar
2351
Rep
2,359
Posts

Drives: G87 M2; E92M3 MT&DCT; M3 euro
Join Date: Sep 2014
Location: nyc

iTrader: (0)

Garage List
2004 BMW Z4  [0.00]
Recaro RMS is going into my car on 8th of January. D-20...

__________________
Pass me if you can.
Appreciate 5
///Mobbin1474.50
slicer2733.00
DR-JEKL897.50
IanMan382.50
roastbeef11574.50
      12-19-2018, 11:44 AM   #68
///Mobbin
Colonel
///Mobbin's Avatar
1475
Rep
2,672
Posts

Drives: m3
Join Date: Jul 2011
Location: Houston

iTrader: (3)

Haven't seen that one before, nice!
__________________
2021 Alfa Romeo Stelvio Quadrifoglio | 2.9L | Trofeo White Tri-Coat | 8-spd
Appreciate 0
      12-19-2018, 07:51 PM   #69
dozaiya
Captain
Taiwan
236
Rep
957
Posts

Drives: 2011 MW E92 M3
Join Date: Nov 2012
Location: Shanghai

iTrader: (1)

holy. shit
Appreciate 0
      12-20-2018, 05:04 AM   #70
DR-JEKL
Major General
Australia
898
Rep
6,285
Posts

Drives: Space Grey E92 335i 6MT
Join Date: Jul 2012
Location: Newcastle Ozstraylia

iTrader: (3)

Quote:
Originally Posted by Chris_PDX View Post
https://racetech-usa.com/shop/seats/...WT-racing-seat

This is the exact one I bought, they also offer a version with the head restraints, but as a big guy I couldn't easily get in/out as quickly as I would like (for safety reasons) with the head restraint version.
racetech have a new seat being released in 2019 the RT4100 and the pricing is great (a lot cheaper than the 4119 and 4009's. (sub $1k usd ea for wide/tall without head restraint version)

May I ask what mounts did you use with your racetech seat? I wish to maximise headroom, will the racetech side mounts work mounted directly to the floor?



Images below is the new RT4100 with head restraints

Name:  RT4100WTHR-110-front-1024px.jpg
Views: 4076
Size:  222.4 KB
Attached Images
 
Appreciate 0
      12-20-2018, 07:50 AM   #71
Makaveli7
Enthusiast
Makaveli7's Avatar
Lebanon
117
Rep
150
Posts

Drives: M3 E92 Jerez Black
Join Date: May 2012
Location: Dubai

iTrader: (0)

Quote:
Originally Posted by kyrix1st View Post
Recaro RMS is going into my car on 8th of January. D-20...

Dayum
Appreciate 0
      12-20-2018, 10:05 PM   #72
kyippee
Lieutenant Colonel
kyippee's Avatar
United_States
1072
Rep
1,617
Posts

Drives: E92 M3, Supra MK5, F44 235GC
Join Date: Feb 2017
Location: SF Bay Area

iTrader: (0)

I have been dabbling into research of a seat to use with OEM 3-point belt, not full on cage and harness. I hear Recaro Sportster CS is the way to go for this. What the ideal/correct brackets to use? I read MS brackets and sliders do not center the seat properly with steering wheel.
Appreciate 0
      12-21-2018, 01:44 AM   #73
SQ13
Second Lieutenant
197
Rep
283
Posts

Drives: E46 M3
Join Date: May 2017
Location: Austin

iTrader: (0)

Quote:
Originally Posted by kpewpew View Post
I have been dabbling into research of a seat to use with OEM 3-point belt, not full on cage and harness. I hear Recaro Sportster CS is the way to go for this. What the ideal/correct brackets to use? I read MS brackets and sliders do not center the seat properly with steering wheel.
Check out the Cobra Nogaro

https://f87.bimmerpost.com/forums/sh....php?t=1520675
Appreciate 1
kyippee1072.00
      12-21-2018, 11:44 AM   #74
kyippee
Lieutenant Colonel
kyippee's Avatar
United_States
1072
Rep
1,617
Posts

Drives: E92 M3, Supra MK5, F44 235GC
Join Date: Feb 2017
Location: SF Bay Area

iTrader: (0)

Thanks SQ13 at first glance seems like a good seat. Need to research further, see if it fits a skinny 5"11 person like me well
Appreciate 0
      12-22-2018, 10:40 AM   #75
kyrix1st
Colonel
kyrix1st's Avatar
2351
Rep
2,359
Posts

Drives: G87 M2; E92M3 MT&DCT; M3 euro
Join Date: Sep 2014
Location: nyc

iTrader: (0)

Garage List
2004 BMW Z4  [0.00]
Quote:
Originally Posted by ///Mobbin View Post
Haven't seen that one before, nice!
It's called Recaro RMS 2700G. Developed specifically for Japanese market. There's also the carbon fiber version called 2600A which is 3 times the price and takes much longer to produce...it's getting seriously irritating for customers as production is nowhere near the promised pace. I waited nearly a year to get my hands on this one after placing an order in January lol.
__________________
Pass me if you can.
Appreciate 0
      12-23-2018, 08:19 AM   #76
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by kyrix1st View Post
Quote:
Originally Posted by ///Mobbin View Post
Haven't seen that one before, nice!
It's called Recaro RMS 2700G. Developed specifically for Japanese market. There's also the carbon fiber version called 2600A which is 3 times the price and takes much longer to produce...it's getting seriously irritating for customers as production is nowhere near the promised pace. I waited nearly a year to get my hands on this one after placing an order in January lol.
I'm working on importing a few sets and the wait has been long with no definite ETA
__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      01-04-2019, 01:56 PM   #77
macdude357
Captain
macdude357's Avatar
467
Rep
818
Posts

Drives: IB E90 M3
Join Date: Sep 2015
Location: San Diego

iTrader: (7)

For those that don't want a halo seat because they drive on the street, how hard is it to swap the seats out? Would it make sense to get a nice halo seat for the track and an inexpensive sport seat for the street (Sparco has one for about $300)? The sport seat would be much better for street driving and would work better with the OEM 3 point system.
Appreciate 0
      01-07-2019, 09:37 PM   #78
MasterP
Colonel
720
Rep
2,342
Posts

Drives: All the M's
Join Date: Aug 2012
Location: Where do you want me?

iTrader: (8)

Quote:
Originally Posted by macdude357 View Post
For those that don't want a halo seat because they drive on the street, how hard is it to swap the seats out? Would it make sense to get a nice halo seat for the track and an inexpensive sport seat for the street (Sparco has one for about $300)? The sport seat would be much better for street driving and would work better with the OEM 3 point system.
Sparco makes a seat with removable halo's. I don't remember the model.
Appreciate 0
      01-07-2019, 11:22 PM   #79
SQ13
Second Lieutenant
197
Rep
283
Posts

Drives: E46 M3
Join Date: May 2017
Location: Austin

iTrader: (0)

Quote:
Originally Posted by macdude357 View Post
For those that don't want a halo seat because they drive on the street, how hard is it to swap the seats out? Would it make sense to get a nice halo seat for the track and an inexpensive sport seat for the street (Sparco has one for about $300)? The sport seat would be much better for street driving and would work better with the OEM 3 point system.
Quote:
Originally Posted by MasterP View Post
Sparco makes a seat with removable halo's. I don't remember the model.
Ergo. They don't make the small size anymore, so if you're like me at 5'7", 165 lbs, 32" (+/- 2"), they're no good. Way too wide.

I'm using a Sparco Circuit right now. No issues on the street unless I'm trying to reverse in a parking lot..no biggie.
Appreciate 0
      01-08-2019, 01:21 AM   #80
macdude357
Captain
macdude357's Avatar
467
Rep
818
Posts

Drives: IB E90 M3
Join Date: Sep 2015
Location: San Diego

iTrader: (7)

Quote:
Originally Posted by MasterP View Post
Sparco makes a seat with removable halo's. I don't remember the model.
I was more concerned about playing well with the stock 3 point system. In reading SYT_SHADOWS posts (he's running the Ergo's), it seems the lap belt openings are too narrow for the OEM receptacle so it's a compromised system for the street.

Also, if the Ergo doesn't fit well, there's really no other option. I was thinking about having my cake and eat it too. I've done some more research and the only real option is to use something like the RaceTech RTRoad for the street (its a side mount fixed-back seat that has a 410mm mounting width). There are a handful of full containment seats that have a similar mounting width (Ergo is 415mm, Sparco Circuit II is 410mm, OMP HTE-R is 420mm). All of those would fit with the BK 390mm-429mm mounts for OEM sliders using the different sized spacers that come with the brackets. So ideally, you'd use the RTRoad for the street and then swap to the "other" seat at the track (its just 4 bolts on the side of the seat, right?).

Unfortunately, the other Cobra seats like the Evolution and Sebring have 380mm mounting widths which would require re-orienting the BK bracket itself.
Appreciate 0
      01-08-2019, 07:07 AM   #81
Obioban
Emperor
Obioban's Avatar
1611
Rep
2,753
Posts

Drives: M3, M3, M5, M5
Join Date: Apr 2008
Location: West Chester, PA

iTrader: (0)

Garage List
2008 BMW M5  [0.00]
2017 BMW i3  [0.00]
2005 BMW M3 Coupe  [0.00]
2001 BMW M5  [0.00]
Quote:
Originally Posted by macdude357 View Post
I was more concerned about playing well with the stock 3 point system. In reading SYT_SHADOWS posts (he's running the Ergo's), it seems the lap belt openings are too narrow for the OEM receptacle so it's a compromised system for the street.

Also, if the Ergo doesn't fit well, there's really no other option. I was thinking about having my cake and eat it too. I've done some more research and the only real option is to use something like the RaceTech RTRoad for the street (its a side mount fixed-back seat that has a 410mm mounting width). There are a handful of full containment seats that have a similar mounting width (Ergo is 415mm, Sparco Circuit II is 410mm, OMP HTE-R is 420mm). All of those would fit with the BK 390mm-429mm mounts for OEM sliders using the different sized spacers that come with the brackets. So ideally, you'd use the RTRoad for the street and then swap to the "other" seat at the track (its just 4 bolts on the side of the seat, right?).

Unfortunately, the other Cobra seats like the Evolution and Sebring have 380mm mounting widths which would require re-orienting the BK bracket itself.
The Brey Krause brackets work with all seats except some race tech models. No idea if the RTroad is one of the ones it doesn’t work with.
Appreciate 1
      01-09-2019, 06:13 AM   #82
kyrix1st
Colonel
kyrix1st's Avatar
2351
Rep
2,359
Posts

Drives: G87 M2; E92M3 MT&DCT; M3 euro
Join Date: Sep 2014
Location: nyc

iTrader: (0)

Garage List
2004 BMW Z4  [0.00]
Finally got my seat installed. For those running 6 point harness, you can run them without removing the backseat: you can get them hooked to child seat isofix mounts.



__________________
Pass me if you can.
Appreciate 0
      01-09-2019, 06:55 AM   #83
Obioban
Emperor
Obioban's Avatar
1611
Rep
2,753
Posts

Drives: M3, M3, M5, M5
Join Date: Apr 2008
Location: West Chester, PA

iTrader: (0)

Garage List
2008 BMW M5  [0.00]
2017 BMW i3  [0.00]
2005 BMW M3 Coupe  [0.00]
2001 BMW M5  [0.00]
Looks unsafe to use the stock 3 point with that setup.
__________________

2005 M3 Coupe, 2004 M3 Wagon, 2001 M5 Sedan, 2008 M5 6MT Sedan, 2012 128i M sport
Appreciate 0
      01-09-2019, 12:45 PM   #84
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Obioban View Post
Looks unsafe to use the stock 3 point with that setup.
Are you saying that because the receiver is outside the seat?

Like Porsche did with Carrera GT >

__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      01-09-2019, 12:55 PM   #85
Obioban
Emperor
Obioban's Avatar
1611
Rep
2,753
Posts

Drives: M3, M3, M5, M5
Join Date: Apr 2008
Location: West Chester, PA

iTrader: (0)

Garage List
2008 BMW M5  [0.00]
2017 BMW i3  [0.00]
2005 BMW M3 Coupe  [0.00]
2001 BMW M5  [0.00]
Quote:
Originally Posted by slicer View Post
Are you saying that because the receiver is outside the seat?

Like Porsche did with Carrera GT >

If the lap belt can't be snugged against you, it is not safe-- regardless of who sold it.

... and the Carera GT is hardly known for being a safe car.

Porsche's production cars do a much better job with that:



As do BMW's:







Maybe the sides of the CGT seat are low enough that that placement still allows for a snugged lap belt for most drivers. But, those Recaro sides are high! I'm a big dude, and I couldn't safely use the factory 3 point when I had a Recaro Profi SPG XL installed in my car, running over the top of the seat.



(and passing it through the lap belt pass through hole created to extreme and angle to sit comfortably in the seat:

)
__________________

2005 M3 Coupe, 2004 M3 Wagon, 2001 M5 Sedan, 2008 M5 6MT Sedan, 2012 128i M sport

Last edited by Obioban; 01-09-2019 at 01:02 PM..
Appreciate 2
DrFerry6722.50
      01-09-2019, 01:52 PM   #86
macdude357
Captain
macdude357's Avatar
467
Rep
818
Posts

Drives: IB E90 M3
Join Date: Sep 2015
Location: San Diego

iTrader: (7)

Quote:
Originally Posted by Obioban View Post
The Brey Krause brackets work with all seats except some race tech models. No idea if the RTroad is one of the ones it doesn’t work with.
Just to close on this, Ian from BK said why not just by an extra OEM slider for the other seat. Then you don't have to worry about trying to use the same mounts. Just swap out the whole thing. Duh, why didn't I think of that.
Appreciate 0
      01-09-2019, 02:30 PM   #87
slicer
Major General
slicer's Avatar
2733
Rep
6,732
Posts

Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

iTrader: (39)

Quote:
Originally Posted by Obioban View Post
If the lap belt can't be snugged against you, it is not safe-- regardless of who sold it.

... and the Carera GT is hardly known for being a safe car.

Porsche's production cars do a much better job with that:



As do BMW's:







Maybe the sides of the CGT seat are low enough that that placement still allows for a snugged lap belt for most drivers. But, those Recaro sides are high! I'm a big dude, and I couldn't safely use the factory 3 point when I had a Recaro Profi SPG XL installed in my car, running over the top of the seat.



(and passing it through the lap belt pass through hole created to extreme and angle to sit comfortably in the seat:

)
I have gone down this same road as well. I spent a bunch of money on new receivers to allow for inner routing of the belts on a 911 track car I had in the past. Then went out of my way to find a seat that allowed the receiver to reside inboard on the e92. In my case the Profi-XL worked with the e92 receiver placed on the inside (like the M3 GTS). I agree that it seems that it is best to have the belt and receiver on the inside of the seat. However as I researched deeper and deeper I found some examples of production cars that placed the receiver on the outside - like the Carrera GT. Now of course I can't find any more examples other than that. At this point I chose to compromise with a seat that fits me properly but doesn't allow for the seatbelt receiver on the inside. I'm OK with that risk as the belt continues to fit firmly on my lap. I wonder if there's another receiver that could be used on the E92 that provides the ability to be routed to the inside. I know there are options that delete the pretensioner charge but I think that would detract from the safety. Did you ever look into that?


__________________
'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
INSTAGRAM - @Slicer_M
Appreciate 0
      01-09-2019, 05:58 PM   #88
Obioban
Emperor
Obioban's Avatar
1611
Rep
2,753
Posts

Drives: M3, M3, M5, M5
Join Date: Apr 2008
Location: West Chester, PA

iTrader: (0)

Garage List
2008 BMW M5  [0.00]
2017 BMW i3  [0.00]
2005 BMW M3 Coupe  [0.00]
2001 BMW M5  [0.00]
Quote:
Originally Posted by slicer View Post
I have gone down this same road as well. I spent a bunch of money on new receivers to allow for inner routing of the belts on a 911 track car I had in the past. Then went out of my way to find a seat that allowed the receiver to reside inboard on the e92. In my case the Profi-XL worked with the e92 receiver placed on the inside (like the M3 GTS). I agree that it seems that it is best to have the belt and receiver on the inside of the seat. However as I researched deeper and deeper I found some examples of production cars that placed the receiver on the outside - like the Carrera GT. Now of course I can't find any more examples other than that. At this point I chose to compromise with a seat that fits me properly but doesn't allow for the seatbelt receiver on the inside. I'm OK with that risk as the belt continues to fit firmly on my lap. I wonder if there's another receiver that could be used on the E92 that provides the ability to be routed to the inside. I know there are options that delete the pretensioner charge but I think that would detract from the safety. Did you ever look into that?


I retained pretensioner functionality:



I don't know if it works on the e9X, but on the e46 a lot of people take one of the rear lap belt receivers and run them up front. They're not rigidly mounted (because they lack the pretensioner), so they can pass through the 4/5/6 point lap belt hole without issue. I believe that to be the lesser evil, if you have to choose between a loose seatbelt or nixing the pretensioner (if for no other reason than I don't think the pretensioner would do anything useful if the belt isn't in contact with you because of the seat).

I wish I had a better picture of it, but I'm even using the pretensioner with my 6 point-- on the inboard side I'm using a quick fit lap belt mount for the factory receiver

__________________

2005 M3 Coupe, 2004 M3 Wagon, 2001 M5 Sedan, 2008 M5 6MT Sedan, 2012 128i M sport
Appreciate 2
roastbeef11574.50
kyrix1st2350.50
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:17 AM.




m3post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST