I started by fitting the B8s at the rear with M135i springs and ride improved a lot.

Drove it like this for a couple of weeks and would have stopped at that, but my OCD made fit B8s to the front as well

 

If you are paying someone else to do the fitting, do it once and go straight to the B12 kit. The major cost of the kit is the dampers.

 

Im not fussed about the fitting, can get it done for 50 from a mate runs his own garage

Its the back I want to sort out as dont have any issues with the front feel and can get the rear shocks cheap including the pro kit rear springs if I want them - cheaper than any online site I have seen which is why im keen to get them and fit them!

B12 kit is out the equation for now

Im after experience of anyone who has done similar before I go ahead really

 

Excellent idea. The rear dampers are by far the weakest link.

Slapping just B8 rears would be an insurance non event too. You've replaced a set of failed (bouncy) rear dampers.

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Excellent idea. The rear dampers are by far the weakest link.

Slapping just B8 rears would be an insurance non event too. You've replaced a set of failed (bouncy) rear dampers.

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Yeah Im kind of leaning that way if I am honest its quick and cheap enough to just do and hope be enough to do what I am after without even needing to change the hard springs out

Tail end of 2021 I will probably do the whole lot, but want something now to improve quality of ride

If I did swap the springs too would that upset the handling with the front at all, with the front being stock and the rear running the softer Eibach springs? Or would that improve it further?

 

IMO just drop the dampers in. Do springs when you've got fronts.

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And rear dampers are easy to change (vs front)

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Yeah think that's my plan.

Will get it sorted after Xmas and report back how it goes

 

Sounds like a good plan to me. No harm in changing dampers in axle pairs, especially for vastly improved versions.

I'd consider slightly shorter bump stops too.

 

I am going to swim against the tide here.... I thought the weakest link on the 140 was the rear springs. If I was swapping things on the cheap, I would be doing them first, but then I guess dropping the rear and not the front might have some interesting effect on aesthetics as well as handling.

 

I am going to swim against the tide here.... I thought the weakest link on the 140 was the rear springs. If I was swapping things on the cheap, I would be doing them first, but then I guess dropping the rear and not the front might have some interesting effect on aesthetics as well as handling.

I bought a set of M135i rear springs for £45 posted on eBay. Only fitted the rears.

I drove it like this for a few days before the B8s arrived.

It was a much nicer riding car with just the springs.

If handy with tools you could change springs yourself. Good video on YouTube (below) You don't need to remove rear shock to swap spring, just undo the lower mount bolt. 2 jacks or axel stand and a jack handy to raise & lower lower arm to get bolts back in.

https://youtu.be/p6usLM8-FIQ

 

I'm doing exactly that...

I've already changed the springs but want to try and tame the rear bounce a bit more. Having spunked a load of money on a proper alignment at Centre Gravity in September, I'm going to leave the fronts for a bit.

The rears looks **** easy to swap out. I'll add in the M Performance bump stops too.

I'm just trying to find the best price for a pair. Demon Tweeks look to be the cheapest and on eBay there's a further 10% off. The part number is right but the str says they won't fit my car.

 

I'm doing exactly that...

I've already changed the springs but want to try and tame the rear bounce a bit more. Having spunked a load of money on a proper alignment at Centre Gravity in September, I'm going to leave the fronts for a bit.

The rears looks p*ss easy to swap out. I'll add in the M Performance bump stops too.

I'm just trying to find the best price for a pair. Demon Tweeks look to be the cheapest and on eBay there's a further 10% off. The part number is right but the str says they won't fit my car.

Part numbers on AutoDoc that I bought and was given by Bilstein,

Rears = 24-264563

Fronts = 35-264552

As I was not lowering I used existing rear bump stops.

Front don't use any as built in (rear also built in I believe) Rear bump stops also incorporate dust covers so thought best to fit them.

 

I'm doing exactly that...

I've already changed the springs but want to try and tame the rear bounce a bit more. Having spunked a load of money on a proper alignment at Centre Gravity in September, I'm going to leave the fronts for a bit.

The rears looks p*ss easy to swap out. I'll add in the M Performance bump stops too.

I'm just trying to find the best price for a pair. Demon Tweeks look to be the cheapest and on eBay there's a further 10% off. The part number is right but the str says they won't fit my car.

Part numbers on AutoDoc that I bought and was given by Bilstein,

Rears = 24-264563

Fronts = 35-264552

As I was not lowering I used existing rear bump stops.

Front don't use any as built in (rear also built in I believe) Rear bump stops also incorporate dust covers so thought best to fit them.

That's the part number that I've been using. I'm going to call DT this morning to double check the part number etc because they're a decent chunk cheaper than the next cheapest which will pay for the bump stops.

 

When I fitted my B12 kit I did the rears first, and then a few weeks later had the fronts done, rears made the biggest difference and like previously said might have stopped at that if I didn't have the fronts in the box looking at me [emoji23]

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I was in the same predicament as you. I didn't want to loose the adaptive as I like the functionality but again didn't want to fork out on a full suspension kit when knowing most of the faults were with the rear. So I started there, first with underbody brace then springs and finally dampeners and the improvements where noticeable with every step and greatly with dampeners.

I currently have the rear under body brace, powerflex subframe inserts, eibach pro springs and rear B6 damptronic.

And I'm really happy with the combination. They are slightly firmer than the stock rears but not boneshaking nor unpractical. I have only driven a few hundred miles but the difference is night and day and I'm looking forward to the summer so I test it fully.

I will eventually fit Damptronics to the front also but there not at the top of my Shopping list atm.

 

I am going to swim against the tide here.... I thought the weakest link on the 140 was the rear springs. If I was swapping things on the cheap, I would be doing them first, but then I guess dropping the rear and not the front might have some interesting effect on aesthetics as well as handling.

I bought a set of M135i rear springs for £45 posted on eBay. Only fitted the rears.

I drove it like this for a few days before the B8s arrived.

It was a much nicer riding car with just the springs.

If handy with tools you could change springs yourself. Good video on YouTube (below) You don't need to remove rear shock to swap spring, just undo the lower mount bolt. 2 jacks or axel stand and a jack handy to raise & lower lower arm to get bolts back in.

https://youtu.be/p6usLM8-FIQ

Has anyone got a link for changing the rear dampers? This one seems to only be the fronts.

Cheers

 

I am going to swim against the tide here.... I thought the weakest link on the 140 was the rear springs. If I was swapping things on the cheap, I would be doing them first, but then I guess dropping the rear and not the front might have some interesting effect on aesthetics as well as handling.

I bought a set of M135i rear springs for £45 posted on eBay. Only fitted the rears.

I drove it like this for a few days before the B8s arrived.

It was a much nicer riding car with just the springs.

If handy with tools you could change springs yourself. Good video on YouTube (below) You don't need to remove rear shock to swap spring, just undo the lower mount bolt. 2 jacks or axel stand and a jack handy to raise & lower lower arm to get bolts back in.

https://youtu.be/p6usLM8-FIQ

Has anyone got a link for changing the rear dampers? This one seems to only be the fronts.

Cheers

Are the rears not covered later in the video?

They look to be a piece of cake; one big bolt at the bottom, three e-torx at the top, peel back the membrane then you a 16mm pass through socket and a 5mm Allen key.

My B8's rear dampers should be here in the next few days (they've been dispatched). I need to order the M Perf bump stops and then I'll get them fitted although I might hang fire though until it warms up though!

 

I am going to swim against the tide here.... I thought the weakest link on the 140 was the rear springs. If I was swapping things on the cheap, I would be doing them first, but then I guess dropping the rear and not the front might have some interesting effect on aesthetics as well as handling.

I bought a set of M135i rear springs for £45 posted on eBay. Only fitted the rears.

I drove it like this for a few days before the B8s arrived.

It was a much nicer riding car with just the springs.

If handy with tools you could change springs yourself. Good video on YouTube (below) You don't need to remove rear shock to swap spring, just undo the lower mount bolt. 2 jacks or axel stand and a jack handy to raise & lower lower arm to get bolts back in.

https://youtu.be/p6usLM8-FIQ

Has anyone got a link for changing the rear dampers? This one seems to only be the fronts.

Cheers

It covers the whole job, front & rear.

A second trolley jack under the lower arm is handy as you can then raise & lower the lower arm in order to get bolts out and then back in. I borrowed my neighbours as mine was holding up the actual car. Don't same mistake I made 1st time as I put jack in from the side, this didn't allow bolts to slide straight in. On other side I had the jack at 90 degrees to the car, or put another way it was pointing at the diff. This made getting bolts in & out dead easy.

Merry Christmas

 

OK thanks guys, I didn't think it did. Maybe I need to fast forward it more.

 

Just played it through and it just seems to be the fronts. What am I missing?

 

Just played it through and it just seems to be the fronts. What am I missing?

Rear starts about 20mins....

https://postimg.cc/sQgdF2yz

 

Would replacing just the rear shocks be classed as a modification or not seeing as its not adjusting the ride height due to using the stock springs in my case?

Been looking at quotes for declaring suspension mods (more in anticipation of a b12 kit at some point) and the costs are shocking! Like the cheapest quote I could find was £1022 a year! I pay £550 currently, so roughly double the cost just for telling them about shocks! Needless to say if thats the case then I will just live with the bouncy back end tbh

I see a lot of quite heavily modified cars in this forum - are these declared or not? If so how much are people paying and who would be the best insurer to try? Double my stock quote just seems like a **** take.

 

Not classed as a modification, no. You're replacing knackered old passive dampers with nice new passive dampers. Exactly the same as fitting Goodyear tyres or Pagid brakes. Lowering springs or coilovers would be a different matter.

Should get a discount for making the car safer really!

 

Not classed as a modification, no. You're replacing knackered old passive dampers with nice new passive dampers. Exactly the same as fitting Goodyear tyres or Pagid brakes. Lowering springs or coilovers would be a different matter.

Should get a discount for making the car safer really!

Thats kind of what I was thinking as they arent dropping the car like springs would etc, just the B8s arent classed as OEM by Bilstein. Shame they arent painted black instead of look at me yellow lol - draw less attention on an inspection!

And exactly my thoughts - stock makes it skip about at speed and over b roads, so improving the safety results in an increase in premium is laughable. I mean they dont care what tyres people use so too many people out and about in YingYang ditch finders which are perfectly reasonable according to insurers! Also how many people use cheap tat brake parts when replacing them and they are classed as acceptable and not declarable but a decent mod to improve handling costs more to insure?

Honestly dont get our insurance terms in this country sometimes