|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
09-15-2017, 11:26 PM | #1 |
Captain
510
Rep 911
Posts |
Rear wing without front splitter
Anyone here road coarse with just the addition of a rear wing (no front splitter)? How does the z4 coupe feel at top speed and corner entry? Being that are cars are 50/50 weight, I curious if addition of only a rear wing made the car that much lighter up front, or if our front end is already pretty good at downforce in stock form?
__________________
Andre - 2J into a Z4 Coupe!
|
09-16-2017, 12:47 AM | #2 |
Lieutenant General
2426
Rep 11,667
Posts |
It definitely needs front aero to balance it out.
I have run many variations of front and back setups. ...& that's why I ended up designing my own front end; APR splitter alone wasn't enough.
__________________
'21 M2C Hockenheim Silver
'18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold) |
Appreciate
0
|
09-16-2017, 08:01 AM | #3 | |
Major
182
Rep 1,031
Posts |
Quote:
I am running rear varis diffuser and a gts wing in the back along with apr and canards in the front. Pretty good stability and can feel the aero grip. I'd say a slight rear bias but car is pretty stable. To answer your other question, stock front end and rear have slight lift at speed. There are some threads about how much buried around here somewhere. I found slightly lowering with coil overs helped front end lift. I felt floaty in the front under stock suspension when above 150kph.
__________________
08 M Coupe • Ceramic Black Fabspeed Headers • MCS 1WNR • Poly FCAB • Stoptech BBK • Vibra-Tech • Epic Tune • Apex EC7 • RPI Scoop • Eventuri • Stromung • Rogue X Pipe • Varis Diffuser • CF E92 GTS Wing • CF Roof
|
|
Appreciate
0
|
09-16-2017, 09:22 AM | #4 |
Captain
510
Rep 911
Posts |
Interesting. Obviously I'm trying to avoid going front splitter, mainly for daily driving sake (speed bumps, driveways, etc), and the uncertainty of how much splitter is enough.
Guess you're somewhat referencing this thread: http://www.m3post.com/forums/showthread.php?p=22089354
__________________
Andre - 2J into a Z4 Coupe!
Last edited by dre99gsx; 09-16-2017 at 09:45 AM.. |
Appreciate
0
|
09-16-2017, 11:25 AM | #5 |
Lieutenant General
2426
Rep 11,667
Posts |
With your skills you could make one ala M4 GTS that slides in and out.
__________________
'21 M2C Hockenheim Silver
'18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold) |
Appreciate
0
|
09-16-2017, 11:29 AM | #6 |
Captain
510
Rep 911
Posts |
Don't give me anymore ideas!
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
09-16-2017, 03:21 PM | #7 |
Colonel
2428
Rep 2,704
Posts
Drives: Built not Bought 04 Z4 VF
Join Date: Feb 2013
Location: Kitchener Ontario Canada
|
Just to add my .02 to this discussion.
No road course for me but I have had a chin spoiler/air dam on my non M for 3 years and this year I add the Skyer rear lip spoiler and side skirt extensions. I do experience front end floating at "highway speeds" now that I did not experience before. I can't see the extensions causing front end lift so it has to the the rear lip pushing the rear down. I wish there was a decent splitter option for the Pre facelift front fascia.
__________________
W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
|
Appreciate
0
|
09-16-2017, 07:22 PM | #8 | ||
Lieutenant General
2282
Rep 12,565
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (99)
Garage List F15 X5 xDrive35i [8.75]
E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.22] |
Quote:
Quote:
|
||
Appreciate
0
|
09-16-2017, 08:14 PM | #9 |
Captain
510
Rep 911
Posts |
Ok. Not an ideal splitter for all intents and purposes, but I just built my own for the heck of it. 1/4" thick lexan, carbon fiber wrapped.
Also, my wing is mounted fairly low, more like a spoiler, and is adjustable. I will see how it does at NJMP in two weeks. This was a FT86 SARD wing (got it for a steal) that I custom mounted with brackets which fit on the edges of the hatch. No holes drilled! I know there are ways to improve on what I have, and I could have kept going, but I'm not a fan of the large roof-height wing nor long 4" splitters with canards. I'm going for subtle right now. Also in the works is a custom rear diffuser similar to FancyWide, but integrated with my current rear diffuser. I doubt the diffuser will do much, but I have many holes/pockets underneath the rear which need to be filled.
__________________
Andre - 2J into a Z4 Coupe!
Last edited by dre99gsx; 09-16-2017 at 08:30 PM.. |
Appreciate
0
|
09-16-2017, 10:01 PM | #10 | |
Lieutenant General
2282
Rep 12,565
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (99)
Garage List F15 X5 xDrive35i [8.75]
E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.22] |
Quote:
|
|
Appreciate
0
|
09-16-2017, 10:02 PM | #11 |
Captain
510
Rep 911
Posts |
Delaware PCA
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
09-16-2017, 11:34 PM | #12 |
Lieutenant General
2282
Rep 12,565
Posts
Drives: Z4 M, X5, GX460
Join Date: Apr 2008
Location: CT
iTrader: (99)
Garage List F15 X5 xDrive35i [8.75]
E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.22] |
|
Appreciate
0
|
09-17-2017, 09:26 AM | #13 |
Private First Class
58
Rep 199
Posts |
What just happened. Just a day ago, seemingly casual question was asked. And suddenly out pops a custom front splitter.
Can you post more pics of the your custom wing mount? Specifically directly from the rear, and also the mounting points with the boot raised. I'm shopping for a wing, have a few options in mind but am really holding back due to the need to drill holes. |
Appreciate
0
|
09-17-2017, 10:13 AM | #14 |
Captain
510
Rep 911
Posts |
I work fast With HPDE coming quick, need to have something to experiment with. The splitter is by no means correctly done. It is probably too narrow, and there is no damn to help direct high pressure air around the bumper to the sides.
I was going for this look and 'effect' with just enough rear spoilage to help reduce lift, not necessarily add downforce: Hopefully the downforce really isn't that much more than before, reducing the need for a proper front spoiler. I'll know by this track session, and have the winter to mull over a more complete design. I'll get some photos later tonight.
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
09-17-2017, 01:20 PM | #15 |
Captain
510
Rep 911
Posts |
__________________
Andre - 2J into a Z4 Coupe!
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|