H&R anti roll bars

4.2 V8 32v Naturally Aspirated - 414 bhp
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RossDagley
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H&R anti roll bars

Post by RossDagley » Wed Oct 15, 2014 9:46 am

http://www.dpmperformance.co.uk/car-par ... attro-0905

I've been eyeing these up but would like some feedback from anyone who's got them already. I do track the breadvan (Nurburgring mostly) but do have to actually use it on british roads occasionally too - I don't want to give up the comfort the car gives on long hauls when needed.

Currently the setup feels close to ideal - I'm on DRC with SS+ - but I'd like a little less roll and a fraction less understeer on track. For the road I'd say it's about perfect as it is.

How are these bars likely to affect the car? Those who have them I'd be grateful for your input.
Believe only the man who has nothing to gain from what he says.

2017 BMW M4 Competition Pack - Mineral Grey - 530ps by bootmod3, JCWeldfab exhaust.
Previously:
Renault Megane R26 - Liquid Yellow - 275ps.
2015 Audi Exclusive RS4 B8 - Merlin Purple - JCWF Exhaust
2009 Audi RS6 C6 - Phantom Black - 730ps MRC Tuned
2008 Audi RS4 B7 - Phantom Black - 449ps MRC Tuned
2002 Peugeot 106 Gti - Mauritius blue - 430ps Home built.

Marten
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Re: H&R anti roll bars

Post by Marten » Wed Oct 15, 2014 11:04 am

I have these on my car (also H&R springs). Im on the softest setting and I haven't tryed different set ups yet. That being said... I really can feel how the turn-in is sharper and mid corner has more grip. Around the track I could feel being bit faster.
Sure the springs and bars will stiffen up the car, I love it. It's definitely not racecar stiff, more like fast sports car (which it is)!

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Re: H&R anti roll bars

Post by marc1 » Wed Oct 15, 2014 1:18 pm

Ross I think you'll love them. The car feels slightly stiffer if you hit a pothole but generally the comfort isn't too compromised. That said I haven't used these bars on this RS (as have added the SS+ bar for now) but I had them on an S4 (the RS4 bars in your link) and have uprated ARB's on all the Audi's I've owned (A, S and RS's). I had Hotchkis on my B5 RS4 with coilovers and the set up was awesome. The Hotchkis bars for the B7 I feel might be a step too far though (29mm rear but hollow).

Also there is only one option to really use. Full stiff front and rear. :biggrin3:

EDIT to say whilst I thought the Hotchkis bars might be a tad too much for me personally, a lot of folk here have added them (as with the H&R's) and I've been in one on track (with KW v3 too) and the handling was / is superb, but I feel it would be a compromise on road in the long term.

Video from Hotchkis on the B7 RS: http://youtu.be/CKoCgUTk3ns

rwilsonrs4
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Re: H&R anti roll bars

Post by rwilsonrs4 » Wed Oct 15, 2014 1:29 pm

i have these on mine and set to the weakest of the 2 setting s i like the difference as the roll is noticably reduces , but one thing i have found ,, on 3 separate occasions when maybe a little hot going into a corner the back has stepped out and i have succesfully caught it , it may have been to other factors nothing to do with the roll bars , but i,m aware of it now so it has dulled my enthusiasm a tad , which may be a good thing
Phantom black saloon ,PES M112 Supercharged 520ps/595nm K&N filter, 100 cell milltek cats,res valved milltek system. 8 and 10mm H&R spacers.H&R roll bars, "smoke chrome " alloy refurb. JHM Quickshifter, Bilstein B16 coilovers , uprated diff mount ,50/50 devils own WM kit so 1.4 litres/min in intake approx 10% more power and torque
1/4 mile 12.01 secs 123.5mph

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Re: H&R anti roll bars

Post by type r brad » Wed Oct 15, 2014 3:08 pm

I've fitted them on mine pal on stiffest setting!

Nothing with the ride has been compromised.

I run DRC ss.

Coupled with Michelin Cup 2 tyres and 10/8mm spacers it is so much more sharper and precise on turn in, back end feels planted.

Transformed car 100% imho....

Just find limit on open space for understeer :bigblink:

Go for it pal, got mine off Virdee off here, good deal.
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RossDagley
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Re: H&R anti roll bars

Post by RossDagley » Wed Oct 15, 2014 3:43 pm

Thank you all for your comments - seems to cement my views that it's a smart move to get these. Comments duly noted to find the limits somewhere other than the 'ring :D

Is there a lot of work to fit them myself or would I be better having MRC fit them (I'm competent just lazy!).

Cheapest I've found so far online is £373 from "Euro Performance" unless anyone knows somewhere cheaper than that?

Cheers again all :)
Believe only the man who has nothing to gain from what he says.

2017 BMW M4 Competition Pack - Mineral Grey - 530ps by bootmod3, JCWeldfab exhaust.
Previously:
Renault Megane R26 - Liquid Yellow - 275ps.
2015 Audi Exclusive RS4 B8 - Merlin Purple - JCWF Exhaust
2009 Audi RS6 C6 - Phantom Black - 730ps MRC Tuned
2008 Audi RS4 B7 - Phantom Black - 449ps MRC Tuned
2002 Peugeot 106 Gti - Mauritius blue - 430ps Home built.

adsgreen
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Re: H&R anti roll bars

Post by adsgreen » Thu Oct 16, 2014 10:51 am

rwilsonrs4 wrote:i have these on mine and set to the weakest of the 2 setting s i like the difference as the roll is noticably reduces , but one thing i have found ,, on 3 separate occasions when maybe a little hot going into a corner the back has stepped out and i have succesfully caught it , it may have been to other factors nothing to do with the roll bars , but i,m aware of it now so it has dulled my enthusiasm a tad , which may be a good thing
Stiffening the front are should reduce body roll but also reduce front end grip. So under steer should be more rather than oversteer.
However the front end will react quicker to inputs so if you are hot with a change in direction it can unsettle things.
When during the corner does the back step out?
- corner entry / turn in? (are you trail braking)?
- steady state apex?
- corner exit under power?

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Re: H&R anti roll bars

Post by marc1 » Thu Oct 16, 2014 2:12 pm

Fit them yourself Ross, it's very very easy. I would advise using blue lock tight too! There is a guide on the Hotchlkis site and whilst the H&R bars attach differently at the end (front only I think) the guide will give you a general idea. When you remove the stock rear set it on the floor the same way it was on the car and then put the new bar next to it and then offer up to the car. I've not tried, but you might be able to attach backwards and therefore you want to avoid this for obvious reasons. :thumbs:

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RossDagley
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Re: H&R anti roll bars

Post by RossDagley » Thu Oct 16, 2014 3:47 pm

Thanks Marc :) I'll fit em myself then! :D
Believe only the man who has nothing to gain from what he says.

2017 BMW M4 Competition Pack - Mineral Grey - 530ps by bootmod3, JCWeldfab exhaust.
Previously:
Renault Megane R26 - Liquid Yellow - 275ps.
2015 Audi Exclusive RS4 B8 - Merlin Purple - JCWF Exhaust
2009 Audi RS6 C6 - Phantom Black - 730ps MRC Tuned
2008 Audi RS4 B7 - Phantom Black - 449ps MRC Tuned
2002 Peugeot 106 Gti - Mauritius blue - 430ps Home built.

marc1
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Re: H&R anti roll bars

Post by marc1 » Thu Oct 16, 2014 4:56 pm

No probs, save yourself some cash. Report back when you'll tested it on your local racing circuit. :biggrin3:

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RossDagley
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Re: H&R anti roll bars

Post by RossDagley » Fri Oct 17, 2014 3:12 pm

Do the H&R bars come with new bushes or should I be looking at some powerflex bushes or similar for this too?
Believe only the man who has nothing to gain from what he says.

2017 BMW M4 Competition Pack - Mineral Grey - 530ps by bootmod3, JCWeldfab exhaust.
Previously:
Renault Megane R26 - Liquid Yellow - 275ps.
2015 Audi Exclusive RS4 B8 - Merlin Purple - JCWF Exhaust
2009 Audi RS6 C6 - Phantom Black - 730ps MRC Tuned
2008 Audi RS4 B7 - Phantom Black - 449ps MRC Tuned
2002 Peugeot 106 Gti - Mauritius blue - 430ps Home built.

rwilsonrs4
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Location: Scotland somewhere

Re: H&R anti roll bars

Post by rwilsonrs4 » Fri Oct 17, 2014 7:52 pm

adsgreen wrote:
rwilsonrs4 wrote:i have these on mine and set to the weakest of the 2 setting s i like the difference as the roll is noticably reduces , but one thing i have found ,, on 3 separate occasions when maybe a little hot going into a corner the back has stepped out and i have succesfully caught it , it may have been to other factors nothing to do with the roll bars , but i,m aware of it now so it has dulled my enthusiasm a tad , which may be a good thing
Stiffening the front are should reduce body roll but also reduce front end grip. So under steer should be more rather than oversteer.
However the front end will react quicker to inputs so if you are hot with a change in direction it can unsettle things.
When during the corner does the back step out?
- corner entry / turn in? (are you trail braking)?
- steady state apex?
- corner exit under power?
Yeah its likely me going a little late and too much input , i dont think its the roll bars its me being too confident it has broken away at turn in at corner entry , the ESP has sorted it but it wasnt excessive just a bit unsettled , only a minor steering input was reguired ( i used to have a hot m2 escort so it was routine to correct slides without thinking ) :-)
Phantom black saloon ,PES M112 Supercharged 520ps/595nm K&N filter, 100 cell milltek cats,res valved milltek system. 8 and 10mm H&R spacers.H&R roll bars, "smoke chrome " alloy refurb. JHM Quickshifter, Bilstein B16 coilovers , uprated diff mount ,50/50 devils own WM kit so 1.4 litres/min in intake approx 10% more power and torque
1/4 mile 12.01 secs 123.5mph

marc1
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Re: H&R anti roll bars

Post by marc1 » Fri Oct 17, 2014 10:03 pm

RossDagley wrote:Do the H&R bars come with new bushes or should I be looking at some powerflex bushes or similar for this too?
They come with bushes and bolts. Make sure you get the 32mm/24mm combo as they do a 32/22mm set too, double check when they arrive. :thumbs:

adsgreen
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Re: H&R anti roll bars

Post by adsgreen » Sat Oct 18, 2014 7:57 am

Sounds about right - the tougher anti roll bar will make the front end react to steering inputs much quicker so moving the steering wheel the same amount and speed might unsettle the rear. Especially if you are trail braking and unloading the rear too.

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RS04YOB
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Re: H&R anti roll bars

Post by RS04YOB » Sat Oct 18, 2014 2:06 pm

This will be the next thing I am going for my set up already is Bilstiens and Super pro bushes

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