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Discussion Starter · #1 ·
Hi, currently looking at fitting a rear sway bar to my A5 3.0tdi.
I'm looking at the hardrace and 034 bars, hardrace it seems is hollow whereas 034 is solid.
Can anyone reccomend which rear sway bar is best.

Thanks
 

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Audi A5 f5 3.0 TDI Quattro S line S tronic Virtual Cockpit Driving assist pack
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Hello,

Is your car a Quattro?

If so, rear ARBs is brilliant upgrade.

would you not consider H&R as their rear sway bars are thick

~Alex
 

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Discussion Starter · #3 ·
Hi,

Yes my car is a quattro.
Is the hardrace and 034 not thicker than the h&r?
 

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Hi,

Yes my car is a quattro.
Is the hardrace and 034 not thicker than the h&r?
I thought from memory H&R was 30mm but looking back It was the fronts! The rears are slightly smaller at 25 so the hardrace and 034 are deffo a teeny bit bigger.

The difference from hollow and solid is the weight of the bar for a given stiffness. But the downside is it is easier to break compared to a solid ARB.

The weight saving is honestly negligible for everyday use and unless you’ve got a track car and trying to save every gram then it does make sense.

~Alex
 

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Discussion Starter · #5 ·
Would you say the solid bar would work better than a hollow one
 

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Would you say the solid bar would work better than a hollow one
I only ever upgraded to the H&R solid ARB so can say they definitely made a difference with handling and keeping the wheels more planted, you do sacrifice some comfort but definitely worth it when going around corners or roundabouts 👍🏻🤪

~Alex
 

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The solid bar would surely be stronger yes but as Alex says slightly heavier too....
 

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Discussion Starter · #8 ·
What sway bar would you go for the solid or hollow? Cheers
 

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Discussion Starter · #10 ·
How important is it to use these locating pressed nuts? As when trying to undo the sway bar bush bracket two have pushed out and the only way around this is cutting them off as they've seized. Can i just replace with a nut and bolt or is it advisable that I use the roundish push fut nuts?

Cheers
 

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Nut and bolt would suffice to be honest, if you get the nylon self locking nuts then they’ll never undo even with all the vibrations.

~Alex
 

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Discussion Starter · #12 ·
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Discussion Starter · #13 ·
This is the pressed nut, you can see I had to cut one off. I think I'll have to cut them all off and use new bolts and nylon nuts as you say. Only thing I was worried about is if that pressed "nut" is crucial for keeping the sway bar bracket central.
 
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