07-06-2019, 06:54 AM | #1 |
Lieutenant
258
Rep 547
Posts |
Hi everyone, I have searched this subject & found a few posts, but am looking for a decent opinion. I now have ACS Sports Dampers fitted along with the Springs, that were fitted when I got the car a year & a half ago. I am very pleased with the comfort & body control, which is better than the adaptive dampers fitted as standard.
My question is whether there is any detriment to the comfort if I fitted the 15mm ARB's? I have fitted standard tyres now as well (Michelin PS4's) I just feel that it might reduce the small amount of understeer that I am experiencing, especially at medium speeds ... It seems better at higher speeds. I look forward to hearing from anyone. Cheers, Mark
__________________
Current: 2017 F31 335d M Sport - Estoril Blue, ACS Sports Suspension (Springs & Dampers), Black Grill, HK Sound & some other bits'n'pieces
Gone: 2015 F31 320d M Sport Xdrive Auto |
07-06-2019, 09:32 AM | #2 |
Major General
3486
Rep 9,709
Posts |
There won't be a tangible degradation of comfort when going to the 15mm bar. But it is enough to add a level of stiffness to the rear. Still OEM style stiffness, not too crazy, but there.
An excellent upgrade. Fairly low cost too if prepared to DIY. https://f30.bimmerpost.com/forums/sh....php?t=1043440 |
07-06-2019, 10:54 AM | #3 | |
Major
447
Rep 1,453
Posts |
Quote:
|
|
Appreciate
1
NISFAN3485.50 |
07-06-2019, 02:15 PM | #4 | |
Lieutenant
179
Rep 565
Posts |
Quote:
He suggested that with ACS springs and dampers they felt the 15 mm ARB would add nothing to the handling. Id be very keen to hear if it does improve things. |
|
Appreciate
0
|
07-06-2019, 03:26 PM | #5 | ||
Major General
3486
Rep 9,709
Posts |
Quote:
|
||
Appreciate
0
|
07-06-2019, 03:35 PM | #7 |
General
8562
Rep 19,982
Posts
Drives: 911, Cayenne Turbo, Disco 4
Join Date: Sep 2013
Location: Crieff, Perthshire, Scotland
|
I tried big thick birds ARBs, and they were too stiff for the F30 in my opinion, so went back to OEM ones when i fitted coilovers, but went to the 15mm rear one, and I think it worked a treat. The Diesel engines cars are pretty nose heavy and this really nicely helped the front to rear balance. Would be an ideal mod to finish off a car on good suspension.
__________________
Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
|
Appreciate
3
|
07-07-2019, 01:21 AM | #8 |
Major General
13295
Rep 7,483
Posts |
I have zero regrets swapping out the rear ARB on mine. It adds that little more needed control. The car handles a lot better and is less tail happy. If you're into your curves, sweeping bends and, the odd sharp corner it is worth it. No deterioration of comfort. This is on my 435d X Drive.
|
Appreciate
1
McBeemer258.00 |
07-07-2019, 03:22 AM | #9 | ||
Lieutenant
179
Rep 565
Posts |
Quote:
Quote:
Thanks for the replies. Though these two seem a touch contradictory? Tengo saying the front end weight needs addressing so I'm reading it reduces understeer and Chelsea suggesting it prevents oversteer? Or am I over thinking this and what it does is help reduce both over and understeer with 335d or 435d? |
||
Appreciate
0
|
07-07-2019, 03:26 AM | #10 | |||
General
8562
Rep 19,982
Posts
Drives: 911, Cayenne Turbo, Disco 4
Join Date: Sep 2013
Location: Crieff, Perthshire, Scotland
|
Quote:
__________________
Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
|
|||
Appreciate
1
McBeemer258.00 |
07-07-2019, 03:29 AM | #11 |
Lieutenant
179
Rep 565
Posts |
I'd agree it's not something I've felt very often. Certainly that it doesn't cause a problem.
Though I did manage it rather well in an empty snow covered carpark. Does the 15 mm ARB reduce what oversteer potential there is? |
Appreciate
0
|
07-07-2019, 03:55 AM | #12 |
General
8562
Rep 19,982
Posts
Drives: 911, Cayenne Turbo, Disco 4
Join Date: Sep 2013
Location: Crieff, Perthshire, Scotland
|
You only get it when you're in very low grip situations or extreme throttle applications, rather than as a general handling characteristic, so no, I wouldn't say the ARB would stop those if you want them. It's really an overall natural improvement in the balance of the car.
__________________
Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
|
Appreciate
0
|
07-07-2019, 04:27 AM | #13 | |
Lieutenant
179
Rep 565
Posts |
Quote:
Improving the balance is a nice way to think about it. I'll look to get this done. eBay for an ARB then. |
|
Appreciate
0
|
07-07-2019, 05:02 AM | #15 |
General
8562
Rep 19,982
Posts
Drives: 911, Cayenne Turbo, Disco 4
Join Date: Sep 2013
Location: Crieff, Perthshire, Scotland
|
I'd stick with OEM. They don't make any noise and it's a subtle modification where the bar itself makes the difference.
__________________
Current: Porsche 911 991 C4S, Porsche Cayenne Turbo, Land Rover Discovery 4. Gone...G01 X3 M40i, Cayman S 987, F31 340i, Cayman GT4, F82 M4 CP, Lotus Exige V6, G20 330e, F30 330e, Boxster S 987, F31 335d, Mini Cooper SD, E89 Z4, E90 330d 320d, E60 520d, E46 330d 320d, MX5s, E30 325i
|
Appreciate
1
flashollie178.50 |
07-07-2019, 05:08 AM | #16 |
Lieutenant
258
Rep 547
Posts |
Yeah, it's understeer that is the issue … I drove my sons new 430d s drive recently & whilst I appreciate rwd steering characteristics will be different, it highlighted the lack of balance that I feel at moderate speed on certain corners.
My main issue is that I could live with it if the remedy detracted from the overall comfort that I have at present. Really appreciate all the feedback everyone.
__________________
Current: 2017 F31 335d M Sport - Estoril Blue, ACS Sports Suspension (Springs & Dampers), Black Grill, HK Sound & some other bits'n'pieces
Gone: 2015 F31 320d M Sport Xdrive Auto |
Appreciate
0
|
07-11-2019, 01:38 AM | #17 |
Lieutenant
179
Rep 565
Posts |
I've been trawling the internet for a second hand OEM 15mm ARB off a 135 or 140i with no joy.
Any ideas where I can find one? If not what is the BMW part number? |
Appreciate
0
|
07-11-2019, 06:01 AM | #18 |
Major General
3486
Rep 9,709
Posts |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|