Limiter vs Powerflex
 

It looks like I may need to get this done before the ring trip, although either I'm getting used to it or not driving it as hard but I don't seem to feel the rear lose anymore. So I am thinking I need to replace the RTAB, powerflex seems to be a good idea but then thats probably because I don't understand what is being achieved by the limiter. I guess a Powerflex solution wouldn't need the limiter, am I right? What are peoples opinion on this who has done what? Has anybody installed powerflex on all bushes front and rear? what does that do to the ride?

RTAB Limiter kit gets my vote. :thumbs:

There's plenty of threads on here asking your very question.

There are conflicting views but like Rob, limiter kit makes real sense to me. Kit is cheap, effective and new standard bushes are used. This keeps OEM levels of refinement but restricts their movement in the direction causes the sloppy back end. Also prelongs the bush life considerably.

Win.;)

Could you get Powerflex bushes AND the limiter kit together?

Normal bushes with limiter, if you want to reduce unwanted suspension movement then solid bushes, anything inbetween seems pointless to me.:whistle:

I doubt it, the RTAB limiter kit is designed to be used in conjunction with the (uprated) M3 CSL bushes at the rear. The limiter kit retains the stock bush ride quality whilst controlling their 'flexing' action better.

The Powerflex bushes due to their increased stiffness would negate the need for a limiter kit in the first place i think, but you do sacrifice some ride quality by fitting Powerflex bushes imho.

I'd be impressed if anyone can tell the difference between poly bushes or OEM tbh, especially if you're comparing decent to decent and not knackered to decent. We run the poly bushes in the cup cars and the road cars, never had an issue, never needed to replace them.

Having run solid bushes in RTA for 20k odd road miles I doubt anyone could tell the difference to them as far as NVH is concerned never mind softer ones so would agree with John. Still don't see why you'd want any unwanted movement at all there though if the alternative doesn't make the car horrible to drive. Some of the other bush positions I can see the point in a more compliant version (front lower arms for example) but solid RTAB seemed fine to me.

Ditto

Anyone running the 'Black' bushes 'ooer' from Powerflex? I ran these on my E36 M3 and they were superb. And no need for any special tools as they come in 2 halves.