GOLFMK8
GOLFMK7
GOLFMK6
GOLFMKV
  • Has your username changed as part of the site merger and want it changed back? If the other version of your username isn't being used, send Gulfer a PM and we can probably fix it for you

Golf R rear sway for neutral handling?

jmblur

Go Kart Newbie
Location
Massachusetts
Ride
2017 Golf R
With stock DCC suspension.

Not looking for the biggest, stiffest bar out there, just one that won't creak or pop, will survive the salt and nastiness of a New England winter, and make handling more neutral. Not looking for a ton of oversteer, just reduced understeer and better behavior on the limit for autox. Adjustability is a plus so I can dial it in.

Not planning on installing a stiffer front bar at this point since I'm still running stock springs.
 

yirayira

Go Kart Newbie
Location
Lancaster, PA
A much larger rear bar seems to bring handling closer to neutral.
The rear 25mm ST sway bar with Moog endlinks is an excellent combo for quality and value. Not extremely thick but paired with some trailing arm braces you have really improved handling without anything unpredictable at the limit of traction 👍
 

goodvibes

Passed Driver's Ed
Location
IL
That sounds correct. The r bar gets the alltrack with the extra weight back there about neutral so you probably need more bar for the R.
 

jmblur

Go Kart Newbie
Location
Massachusetts
Ride
2017 Golf R
Have you tried changing the alignment to ZERO toe in the rear?
Not yet, still stock suspension everywhere (except for wider wheels/tires, but scrub radius is about the same). Putting some .8deg camber mounts and a strut tower bar in, at which point I'll play with alignment too.
 

jimlloyd40

Autocross Newbie
Location
Phoenix
Ride
2018 SE DSG
Here's the one I put on my car and am very happy with it.

 

impulsive.ca

Go Kart Newbie
For serious? Goddamn it.

Just checked the H&R site, different part #s and the R only has a 25mm option. Well, guess I've got a rsb for sale 👍
 

GTIfan99

Drag Racing Champion
Location
FL
Not yet, still stock suspension everywhere (except for wider wheels/tires, but scrub radius is about the same). Putting some .8deg camber mounts and a strut tower bar in, at which point I'll play with alignment too.
Don't afraid of a big rear bar, they aren't what make noise, that's end links.. My 26mm bar and Moog links make zero noise.

Zero toe is not advised WITH a large rear bar. I personally like .2 deg of toe in at the rear. Zero is too unpredictable for me.

Also, I just installed Eurosport camber kit and got -2 camber. Today I went back and took out the play in the top bolts and at the bottom at ball joint mount. There's a lot more play than I thought. I'll let you know once I get it back on the rack.
 
Last edited:

r12rex

Passed Driver's Ed
Location
SoCal
Neuspeed 25mm rear here with Moog endlinks. Quiet as stock, gave me the body control I need and more rotation. :) I'm happy with mine! Definitely recommend. Also, for the weight nuts, it is tubular which does not weigh as much as the solid sways out there. :)
 

jmblur

Go Kart Newbie
Location
Massachusetts
Ride
2017 Golf R
Don't afraid of a big rear bar, they aren't what make noise, that's end links.. My 26mm bar and Moog links make zero noise.

Also, I just installed Eurosport camber kit and got -2 camber. Today I went back and took out the plat in the top bolts and at the bottom at ball joint mount. There's a lot more play than I thought. I'll let you know once I get it back on the rack.
It's more the desire for neutral handling instead of concern for noise. Don't want the rear end too loose, but an adjustable bar should help that.

As for endnlinks, no exposed ball joints due to new England winter but otherwise not too worried.
 

GTIfan99

Drag Racing Champion
Location
FL
It's more the desire for neutral handling instead of concern for noise. Don't want the rear end too loose, but an adjustable bar should help that.

As for endnlinks, no exposed ball joints due to new England winter but otherwise not too worried.
Rear toe is your friend when getting the car dialed in. You're going to end up on the stiffest setting and car will be close to neutral. You'll fine tune with toe.
 

SouthFL_Mk7.5

Go Kart Newbie
Location
South Florida
Ride
2019 GTI S
Don't know if it's the thinnest but isn't the stock RSB 20MM? 22MM doesn't like much of difference but SuperPro does make great stuff.
I put “thinnest” in quotes because I don’t know which RSBs are hollow, with a much larger O.D. than the SuperPro.

I have SuperPro stuff up front, so looking to keep things consistent out back. SuperPro also has a 24mm RSB- when calling it up at BMP Tuning, it’s specified for Golf R AWD (I drive a GTI).
 

jmblur

Go Kart Newbie
Location
Massachusetts
Ride
2017 Golf R
Is SuperPro at 22mm (adjustable) the “thinnest” aftermarket RSB available?
Golf R stock bar is 21.7mm.

Note that (for solid bars) stiffness goes up with the 4th power of the radius (Iz=pi/2 * r^4). For hollow bars, it's Iz = pi/2 * (ro^4 - ri^4). All other things being equal, of course.

So, a 22mm bar is 46% stiffer than a 20mm bar!
 

SouthFL_Mk7.5

Go Kart Newbie
Location
South Florida
Ride
2019 GTI S
Golf R stock bar is 21.7mm.

Note that (for solid bars) stiffness goes up with the 4th power of the radius (Iz=pi/2 * r^4). For hollow bars, it's Iz = pi/2 * (ro^4 - ri^4). All other things being equal, of course.

So, a 22mm bar is 46% stiffer than a 20mm bar!
Thx for the number crunching.
I may go the conservative route with the SuperPro. With adjustability there can be further tuning.
 

GTIfan99

Drag Racing Champion
Location
FL
Read literally every thread on swaybars on the forum and 24 to 26 mm bars make the car neutral. Why you would go with a 22mm bar is beyond me. I just isn't enough bar, but it's your money, learn the hard way if you want.
 

goodvibes

Passed Driver's Ed
Location
IL
Golf R stock bar is 21.7mm.

Note that (for solid bars) stiffness goes up with the 4th power of the radius (Iz=pi/2 * r^4). For hollow bars, it's Iz = pi/2 * (ro^4 - ri^4). All other things being equal, of course.

So, a 22mm bar is 46% stiffer than a 20mm bar!
Wall thickness matters as well and more than is often suggested. Alltrack bar is the same diameter as the R (they look identical) but thinner walled and clearly not as stiff.
 
Top