F45 Active Tourer - Uprated anti roll bars ???

[JBL]

 

I have had the 2015 f45 225i xdrive Luxury for 7 months now and even the wife comments on the soft and bouncy ride.
Replacing the run flats with proper tyres (Hankook Kinergy all season - front 36.rear34psi) improved the handling and harshness of the ride but the oem suspensions just seems very soft. It has no option settings on the car and it has a genuine 21k miles over 6 years so shocks should not be worn.
I have had the suspension given a general check over after a wheel alignment and all OK, no leaks, nothing broken, all looks tight, no obvious fault.
On my old Subaru Forester a thicker anti-roll bar, subframe lock bolts and KYB shocks worked wonders for the ride. Before I look to replace the shocks, which really shouldn't be necessary at 21k miles, is there anything else that I can look at first ?
I was wondering if the Active Tourer M-Sport has stiffer/uprated anti roll bars and if so ?? are they interchangeable with the Luxury  as this would be an obvious solution.

Any thoughts appreciated.
Cheers
Brian.

[Greydog]

Hi Brian 

Welcome to the Forum

That's a new one 😂 a soft BMW

Two things I would do (1) check BMW Vin Decoder (Google) it will bring up your cars build sheet so you will have the original setup (2) check www.realoem.com (it is a BMW online parts list) put the last 7 digits of your Vin into the search box it will bring up your model so you can check what parts are available.

Certainly M sport springs and dampers are normally stiffer.

Hope you find what you need

Dave

[JBL]

16 hours ago, Greydog said:

Hi Brian 

Welcome to the Forum

That's a new one 😂 a soft BMW

Two things I would do (1) check BMW Vin Decoder (Google) it will bring up your cars build sheet so you will have the original setup (2) check www.realoem.com (it is a BMW online parts list) put the last 7 digits of your Vin into the search box it will bring up your model so you can check what parts are available.

Certainly M sport springs and dampers are normally stiffer.

Hope you find what you need

Dave

Thanks Dave,

I tried a few vin decoders but the ones that worked just gave me basic details of the car, not build specs' but I am sure it does not have adaptive suspension.

Realoem "seems" to indicate that the anti-roll bars are interchangeable and do have a different part number but I still can't find positive detail that shows the m-sport one  is stiffer. I am still waiting for a response from BMW customer services.

Cheers

Brian.

[Greydog]

Morning Brian

Normally the Vin Decoder will give a list of codes (left column below) that identify the equipment to be fitted as (a) Standard and (b) Customer order

S806A BMW Third Brake Light

SZP1A BMW Performance brake system
SZP2A BMW Performance air-induction system
SZP3A BMW Performance muffler system
SZP4A BMW Performance shift travel reduction
SZP5A BMW Performance suspension

In realoem is there a different roll bar Part No for the M version ?

My wife's Subaru Outback is heavily modified, Olin adjustable suspension all round 356mm 6 pot front brakes and a 3.0 Perrin engine ride is on the hard side. My X5 4.6is is all BMW OEM and the ride is OK on good roads Harsh on most roads 

Dave

 

[JBL]

Thanks again Dave,

My local BMW dealer called me this morning and told me that the anti-roll bars are NOT interchangeable so I will live with it for the moment and look at options later.

I liked Subaru, had two Legacy turbo estates back in the day (traffic pulled over to let me pass in the white one !!) and then imported a JDM T/TB in 2002 and kept it for years and years. One of the best cars I have had and tweaked no end. It brought a smile to my face which the BMW has yet to do.

 

Cheers

Brian.

[Greydog]

Hmmmn Good Old BMW Dealer 

A quick look at realoem tells me that the Roll bar for you car is also used on the F45LCI F46 F48 and Mini Clubman F54 while the M235 roll bar was used on F39 F40 F44 and two Mini's the Clubman F54 and Countryman F60

Mind my BMW Dealer told me that "someone" had fitted "Non""standard parts to my X5 that could make it unsafe to drive !!! The non standard parts are Poly bushes I asked him if they were unsafe why were BMW use them on their BTCC cars ? No answer not mentioned again.

Dave