Trailing arm bush limiter kit -v- poly bush

**Mike R** · 22-03-2013, 11:16 AM

What are the pros and cons of each?

I've got a set of the Turner ones (not fitted), but do they work as well as actually replacing the OE bushes with Powerflex items.

Does replacing the OE bushes with poly items actually transfer a noticeable amount of NVH into the car?

I'm actually after first hand experience, not anecdotal

.

KPNUTZ · 22-03-2013, 06:12 PM

Also interested as mine is in soon for the boot floor so will replace while its out.

KPNUTZ · 22-03-2013, 06:30 PM

Just done a search on this, unless the car is tracked it doesn't seem worth it.

_Nathan_ · 22-03-2013, 06:34 PM

I'm a believe in either the limiter kit and a new OEM bush or a bearing race. There is nothing actually wrong with the handling on new OEM bush with limiters IMO and the shims help them last longer and prevent toe changes which are the only 2 gripes with the standard bushing.

If under warranty then I think OEM bush plus limiter is more acceptable to BMW than after market parts (eg for subframe mounting repairs), Shim will know more on that angle though I'd say.

I ran bearing races on the road and they were fine until they needed refreshing at which point they got noisy.

Never used poly bushes on RTAB but have seen photos of some that lasted a matter of weeks before tearing.

**Mike R** · 22-03-2013, 06:37 PM

Thanks Nath

.

**AlexGTT** · 23-03-2013, 03:11 PM

I've used limiter kit with OEM bushes for the last 5 years and 50k miles. Road and TD's. Haven't changed a bush since.

**shimmy** · 23-03-2013, 03:14 PM

Quote:

Originally Posted by AlexGTT

I've used limiter kit with OEM bushes for the last 5 years and 50k miles. Road and TD's. Haven't changed a bush since.

same here but 75k miles

cant see what god poly will do apart from transfering stress to the body and making warranty claim harder on subframe fails, and also making ride much harsher.

might do it if i had a cage

phoenixcsl · 24-03-2013, 01:07 PM

Quote:

Originally Posted by _Nathan_

If under warranty then I think OEM bush plus limiter is more acceptable to BMW than after market parts (eg for subframe mounting repairs), Shim will know more on that angle though I'd say.

As Nathan said, I have the limiting kit with OEM bushing in my car, which has just had the subframe repair done at Elms in the past two weeks, I didn't have any trouble with them for having the kit installed.

Neil M · 24-03-2013, 01:53 PM

Quote:

Originally Posted by phoenixcsl

As Nathan said, I have the limiting kit with OEM bushing in my car, which has just had the subframe repair done at Elms in the past two weeks, I didn't have any trouble with them for having the kit installed.

That's good to know, I also have the kit fitted but mine needs the rear shocks replacing, one appears to have developed a slight leak. Subframe no problems, touch wood

Steve B · 25-03-2013, 04:25 PM

Mike,

when I had my rear subframe replaced I got BMW to fit the RTA bushes and the 4 subframe mounts in Power Flex (I supplied them) and I haven't really noticed any extra vibration etc...

Steve

22-03-2013, 11:16 AM	#1
Mike R S6, Sport On, Traction Off Join Date: Dec 2010 Location: Norwich Posts: 1,585 Casino cash: $17591	Trailing arm bush limiter kit -v- poly bush What are the pros and cons of each? I've got a set of the Turner ones (not fitted), but do they work as well as actually replacing the OE bushes with Powerflex items. Does replacing the OE bushes with poly items actually transfer a noticeable amount of NVH into the car? I'm actually after first hand experience, not anecdotal . __________________ Mike R Sarcasm is just a free service I provide. Nordschleife, there's only two barriers to worry about - the ones on the left and the ones on the right . CSL number 044

22-03-2013, 06:34 PM	#4
_Nathan_ Driving it like I nicked it Join Date: Sep 2008 Posts: 2,099 Casino cash: $13060	I'm a believe in either the limiter kit and a new OEM bush or a bearing race. There is nothing actually wrong with the handling on new OEM bush with limiters IMO and the shims help them last longer and prevent toe changes which are the only 2 gripes with the standard bushing. If under warranty then I think OEM bush plus limiter is more acceptable to BMW than after market parts (eg for subframe mounting repairs), Shim will know more on that angle though I'd say. I ran bearing races on the road and they were fine until they needed refreshing at which point they got noisy. Never used poly bushes on RTAB but have seen photos of some that lasted a matter of weeks before tearing. __________________ Nathan

22-03-2013, 06:37 PM	#5
Mike R S6, Sport On, Traction Off Join Date: Dec 2010 Location: Norwich Posts: 1,585 Casino cash: $17591	Thanks Nath . __________________ Mike R Sarcasm is just a free service I provide. Nordschleife, there's only two barriers to worry about - the ones on the left and the ones on the right . CSL number 044

23-03-2013, 03:11 PM	#6
AlexGTT CSL Register Uber-poster! Join Date: Apr 2008 Location: Herefordshire Posts: 4,374 Casino cash: $8572	I've used limiter kit with OEM bushes for the last 5 years and 50k miles. Road and TD's. Haven't changed a bush since. __________________ CSL Register Alcoholics Anonymous Group Leader & Businessman of the Year '93! www.earleyengineering.com

25-03-2013, 04:25 PM	#10
Steve B S5, Sport Off, DSC M-track Join Date: Sep 2012 Location: Stevenage, Herts Posts: 760 Casino cash: $41	Mike, when I had my rear subframe replaced I got BMW to fit the RTA bushes and the 4 subframe mounts in Power Flex (I supplied them) and I haven't really noticed any extra vibration etc... Steve __________________ When it's gone you miss it..... Now in a M4CS

22-03-2013, 06:12 PM	#2
KPNUTZ S4 - Getting the hang of it Join Date: Dec 2012 Location: Northwest Posts: 156 Casino cash: $1752	Also interested as mine is in soon for the boot floor so will replace while its out.

22-03-2013, 06:30 PM	#3
KPNUTZ S4 - Getting the hang of it Join Date: Dec 2012 Location: Northwest Posts: 156 Casino cash: $1752	Just done a search on this, unless the car is tracked it doesn't seem worth it.