Trailing arm bush limiter kit -v- poly bush

[Mike RT4]

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]

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

[KPNUTZ]

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

[_Nathan_]

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 RT4]

Thanks Nath .

[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.

[shimmy]

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

[AlexGTT]

If you cage it Shim f*ck poly's and go straight to solid mounts.

[shimmy]

If you cage it Shim f*ck poly's and go straight to solid mounts.

Maybe but then you end up trailering it everywhere.

[phoenixcsl]

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]

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:thumbs:

[Steve B]

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