Heavy braking

4.2 V8 32v Naturally Aspirated - 414 bhp
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aidanjaye
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Heavy braking

Post by aidanjaye » Thu Jul 02, 2009 11:34 pm

RS4 s don't half squirm about a bit under really heavy braking...scared myself shi*less tonite on a jaunt back home on bumpy b-roads (in a good way)

Any proven upgrades to improve such?? Would new ARBs help??

davefaedeen
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i agree

Post by davefaedeen » Fri Jul 03, 2009 12:35 am

It is very very busy under braking if there is a fix for it i will buy it!! i guess we could always drive slower!!! :lol: :lol:
5.0 V10 E60 M5 Current
2.0t Audi A3 200BHP Current
2.0 R555 STI 360 BHP Current
4.3 V8 Mk1 Escort 260BHP Current
2.5 WRX STI 270BHP Sold
2.5 RB320 320BHP Sold
4.2 V8 B7 RS4 414BHP Sold
2.0 WR1 Impreza STI 368 BHP sold
2.0 Turbo 2000 Impreza 270BHP sold
1.9 205 Gti LAD Motorsport 168BHP dead
1.6 Saxo VTS 136BHP dead

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ArthurPE
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RE: i agree

Post by ArthurPE » Fri Jul 03, 2009 2:59 am

the fix is changing weight dist from 60/40 to 50/50...the engine is cantilevered over the front axle like a pedulum...
as the wt moves forward it 'lifts' the rear axle...swinging it about the steering axis...
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe...Albert Einstein

davefaedeen
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RE: i agree

Post by davefaedeen » Fri Jul 03, 2009 3:38 am

That could be a very expensive fix!!!! :jump:
5.0 V10 E60 M5 Current
2.0t Audi A3 200BHP Current
2.0 R555 STI 360 BHP Current
4.3 V8 Mk1 Escort 260BHP Current
2.5 WRX STI 270BHP Sold
2.5 RB320 320BHP Sold
4.2 V8 B7 RS4 414BHP Sold
2.0 WR1 Impreza STI 368 BHP sold
2.0 Turbo 2000 Impreza 270BHP sold
1.9 205 Gti LAD Motorsport 168BHP dead
1.6 Saxo VTS 136BHP dead

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ArthurPE
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Re: RE: i agree

Post by ArthurPE » Fri Jul 03, 2009 4:17 am

davefaedeen wrote:That could be a very expensive fix!!!! :jump:
lol

put some fat people in the rear seat and trunk :D

on my M3, I ease into the brakes, gradually increasing pressure...

the RS4 seems to respond better to hard intially, and backing out gradually as the wt transfers to the front...

overall, the brakes are amazing, just took me a slightly different technique to optimize them...

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aidanjaye
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Post by aidanjaye » Fri Jul 03, 2009 9:24 am

Thank god I know some fat people....not sure if they'll want to travel in the boot though....

P_G
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Post by P_G » Fri Jul 03, 2009 9:47 am

A couple of breeze blocks in the boot and Bob's your Auntie

Les
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Post by Les » Fri Jul 03, 2009 10:15 am

This is one of the points always commented on by the journo's.

Clarkson mentioned it but said it's ok once you know about it but the first time can be a bit hairy :D

Have experienced it myself and seems ok as long as you stay focused and don't do anything silly :shock:
One thing is for sure........ they stop you when needed :wink:

Had a little blast over some back roads last night and can't believe how quick and nimble these cars are 8)

pad125
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Post by pad125 » Fri Jul 03, 2009 2:56 pm

Mine has Ceramics and I had to peal my friend off the dash the other evening when he asked me to 'demonstrate' how good they where...and he had his seatbelt on! :shock:

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ArthurPE
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Post by ArthurPE » Fri Jul 03, 2009 5:19 pm

it never really becomes an issue (for me at least) until you are at speeds >100...
at normal road speeds, 70 mph or so, it is minimal
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe...Albert Einstein

ChrisRS4
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Re: RE: i agree

Post by ChrisRS4 » Fri Jul 03, 2009 6:55 pm

ArthurPE wrote:the fix is changing weight dist from 60/40 to 50/50...the engine is cantilevered over the front axle like a pedulum...
as the wt moves forward it 'lifts' the rear axle...swinging it about the steering axis...
That's why the Avants are better balanced and faster :thumb:

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sonny
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RE: Re: RE: i agree

Post by sonny » Fri Jul 03, 2009 8:53 pm

Try Threshold breaking, this eliminates it (or it should).
Money can't buy you love, but it can buy you a well sorted racecar

richardofthesun
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RE: Re: RE: i agree

Post by richardofthesun » Sat Jul 04, 2009 8:09 pm

I carry 250 - 300 kg of calibration weights most of the time in the back of my Avant, and she's just as lively under hard braking, whether loaded or unloaded. I think you just get used to it over time, but first time on an E stop, sh*t, I was just a passenger in distress with a steering wheel in my hand!

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