Join Date: Jul 2013
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I've have been tracking my S5 Sportback MY2013 for almost 6 years now. The last 3 years with a Brembo BBK. Now I'd like to reduce the understeer a bit. My car has the adaptive suspension and no rear sports diff.
What do you guys recommend?
I'm thinking I only need to change the rear sway bar.
Dumb question coming up please, as a non-track car fellow. If I aim to use my road car on a race track then would I set my road car suspension harder, so for instance with the sway bar you are talking about here, and then remove it or switch it off for when I drive home or to the office???? Or are you talking about a set up which then is good for road as well as track use???
My track motorbike is so heavily modified that you could never ride it to work, cos we remove the cooling fan (for instance) so overheating in traffic would be certain and also the suspension settings would make road use impossible.
I spent the day trying to mount it but had to give up. I cannot get bar past the lower wide wheel arm (correct term?) since it does not flex as the OEM one. I tried to loosen the gas damper and level sensor and use a crow bar to force it down without any success.
One option would be to loosen the flat iron rod cross that holds the exhaust and gas tank but those screws are really stuck and I fear I will brake something if trying harder. Loosen those could give enough room to twist the bar since it might be able to move the exhaust a bit more.
Yes, I have the rear wheels hanging in the air and I have also removed to rear exhaust holding nuts to let the exhaust and mufflers sag a bit.
Thanks all, I've ordered the 034 rear bar. Starting with fresh original (Bilstein) end links and the soft setting when I get it. According to 034 their end links can cause increased chassi noise.
Here is an update from my side. I have spent the last weeks mailing back and forth with 034 Motorsport and sent pictures from my car as well as digging in ETKA. The conclusion is that the sway bar should fit but I would need to remove the rear parts of the exhaust. Their instructions says its enough with just removing the rear bolts and let the end pipes and silencer sag a bit.
On a Sportback this is not enough due to the panhard rods (unique for the Sportback) that keeps the exhaust in place as well. And I guess that they needs loosening in the rear (two rear screws on each) to be able to remove the rear exhaust or maybe the exhaust can sag enough with the rods loosened.
Any advice for this operation?
Are the panhard rods in tension so they will come at you when loosening? And will be hard to get in place again?
Also the M12 XZN screws are really tight. I guess some kind of impact driver is recommended. Torque/Loctite when reattaching them? Buy new screws?
Mankan did you finally get it fitted okay- any advice?
Have now found another UK option- anyone tried this one?
It's not too pricey as it's available for us here in the UK- and it's the same thickness as 034 Motorsports:
Hardrace Rear Anti-Roll Bar (25.4mm) - Audi A4 B8 ('08-14), A5/S5 8T ('07+)
Currently available from H-Tune in Northants, so am now considering this fitted with the 034 droplinks.
I noticed them too - asked a few days ago but no answer. Someone on audisport said they were good though. £380 for the bar and drop links is great value.
I emailed a Hardrace distributor and they said although it's hollow the construction means it should be as stiff as a solid bar
I finally decided on the Hardrace rear ARB & Alloy Pillowball Droplinks and ordered it on Black Friday (it took 3 weeks to arrive)- fitted it last week as my exhaust was already off- discovered one of my original droplinks was soon to be in need of replacing anyway- now it corners like it's on rails and the rear stays completely firm & level (low to the ground) when cornering heavily, so I love it.
Had to soak the nuts tightly bound with some fabric soaked with WD40 for a few hours before they could be cracked, and as my Coupe has been lowered (H&R OE Sports Springs), the access was only a few mm for ratcheting, so patience was paramount. :-)