[23109VC]

I'm curious if anyone here has purchased the Dinan lowering springs for the M550 I and has thoughts and observations??

I just picked up my car it's a 2018 everything is OEM it has the 20 inch 668M wheels. Honestly the way it is right now I'm completely satisfied but One of my only minor criticisms is during moderately hard cornering I can feel body roll and I would suspect that with slight suspension upgrades that could be greatly reduced at the car with a corner much much flatter.

But I love the way the car rides in sport mode and I don't want to mess up the comfort aspect of the car so I'm very reluctant to mess with what BMW set up from the factory.

Has anyone here installed the lowering springs from Dinan? I'm curious as to how it rides both in comfort mode and in sport mode?

From past experience in other vehicles I know that lowering the car can place additional stress on the dampers and result in excessive wear back in the days when I was driving around in lowered Hondas and Acuras as soon as you put lowering springs on the stock shocks it seems like not too far off in the future the shocks would wear out and eat before 's to do a shock upgrade....

I am sure that replacing OEM suspension on this car is not cheap. So if it's going to wear out my shocks or damage them I am going to pass.

Anyone have thoughts or opinions ??

[Norris83]

Originally Posted by 23109VC

I'm curious if anyone here has purchased the Dinan lowering springs for the M550 I and has thoughts and observations??

I just picked up my car it's a 2018 everything is OEM it has the 20 inch 668M wheels. Honestly the way it is right now I'm completely satisfied but One of my only minor criticisms is during moderately hard cornering I can feel body roll and I would suspect that with slight suspension upgrades that could be greatly reduced at the car with a corner much much flatter.

But I love the way the car rides in sport mode and I don't want to mess up the comfort aspect of the car so I'm very reluctant to mess with what BMW set up from the factory.

Has anyone here installed the lowering springs from Dinan? I'm curious as to how it rides both in comfort mode and in sport mode?

From past experience in other vehicles I know that lowering the car can place additional stress on the dampers and result in excessive wear back in the days when I was driving around in lowered Hondas and Acuras as soon as you put lowering springs on the stock shocks it seems like not too far off in the future the shocks would wear out and eat before 's to do a shock upgrade....

I am sure that replacing OEM suspension on this car is not cheap. So if it's going to wear out my shocks or damage them I am going to pass.

Anyone have thoughts or opinions ??

I'm also interested to know. Thank you for posting this.

[tprenaldo]

Checked with CarBahn (Steve Dinan's new gig) and they advised it'll be a few months before they figure out a new suspension for the 2021.

[23109VC]

Originally Posted by tprenaldo

Checked with CarBahn (Steve Dinan's new gig) and they advised it'll be a few months before they figure out a new suspension for the 2021.

I have a 2018 so the springs are already out and available for sale I'm just curious who here has tried them out.

My goal would be to have the car in sport plus feel firmer and more rigid and handle better... but at the same time I want to keep the soft and comfortable driving dynamics when I'm in comfort mode yes I know this is wanting to have my cake and eat it too.

I guess what I'm really looking for is to leave the way the car drives on changed in comfort mode but try to up the performance aspect in sport plus mode which may not be realistic.

I'm curious if I were to go and test drive a M5 if you put the car in comfort mode if it's bumpier and stiffer than an M550 in comfort mode and really there's just no way around it if I make the car handle better in sport plus mode I'll sacrifice some of the comfort on the other end of the spectrum?

[thakid22]

Originally Posted by 23109VC

I'm curious if anyone here has purchased the Dinan lowering springs for the M550 I and has thoughts and observations??

I just picked up my car it's a 2018 everything is OEM it has the 20 inch 668M wheels. Honestly the way it is right now I'm completely satisfied but One of my only minor criticisms is during moderately hard cornering I can feel body roll and I would suspect that with slight suspension upgrades that could be greatly reduced at the car with a corner much much flatter.

But I love the way the car rides in sport mode and I don't want to mess up the comfort aspect of the car so I'm very reluctant to mess with what BMW set up from the factory.

Has anyone here installed the lowering springs from Dinan? I'm curious as to how it rides both in comfort mode and in sport mode?

From past experience in other vehicles I know that lowering the car can place additional stress on the dampers and result in excessive wear back in the days when I was driving around in lowered Hondas and Acuras as soon as you put lowering springs on the stock shocks it seems like not too far off in the future the shocks would wear out and eat before 's to do a shock upgrade....

I am sure that replacing OEM suspension on this car is not cheap. So if it's going to wear out my shocks or damage them I am going to pass.

Anyone have thoughts or opinions ??

Lowering springs can wear your shocks out more quickly.
You also are aware of reduced ground clearance.
If you are otherwise pleased with the ride quality, I suggest looking into a good set of sway (anti-roll) bars.

They will keep the car flat in corners and will have minimal effect on ride quality otherwise.
On bumpy roads at low speeds, you may notice ever so slightly increased ride firmness but you'll likely not notice that unless you are looking for it as the 5 series is well isolated from the road.

The only other downside would be a bit of increased head toss or vehicle rocking side when you enter driveways sideways one wheel at a time at parking speeds. This is completely negated by slowing down just a little more when entering those spots.

Otherwise, sways are vise free and can add an on rails feel of solidity to your car in corners.
They will make your steering sharper and moderately heavier too.

[23109VC]

Originally Posted by thakid22

Lowering springs can wear your shocks out more quickly.
You also are aware of reduced ground clearance.
If you are otherwise pleased with the ride quality, I suggest looking into a good set of sway (anti-roll) bars.

They will keep the car flat in corners and will have minimal effect on ride quality otherwise.
On bumpy roads at low speeds, you may notice ever so slightly increased ride firmness but you'll likely not notice that unless you are looking for it as the 5 series is well isolated from the road.

The only other downside would be a bit of increased head toss or vehicle rocking side when you enter driveways sideways one wheel at a time at parking speeds. This is completely negated by slowing down just a little more when entering those spots.

Otherwise, sways are vise free and can add an on rails feel of solidity to your car in corners.
They will make your steering sharper and moderately heavier too.

Does anyone make upgraded sway bars for the M550??

[Lancelot]

Hardrace has a rear one apparently

Bmw?
Anyone tried the f90 bars?
M850i?
Subframes being the same i suspect they could fit.

[beyondm3]

Originally Posted by Lancelot

Hardrace has a rear one apparently

Bmw?
Anyone tried the f90 bars?
M850i?
Subframes being the same i suspect they could fit.

Doing some digging in old threads but I don't find any confirmation on if this has been done...

Can anyone share insight?

[ashmostro]

Check out this thread which includes installation, correction of installation, and review/pics of the Dinan springs.

https://g30.bimmerpost.com/forums/sh...1624896&page=2

[Joe-BMW33]

I looked into the Dinan Springs after I put on some Dinan spacers. My hunt is cosmetic though and I think the modest 0.75" drop of the Dinan springs would look nice and won't be too low for the crappy roads here in the Northeast. However, I had no idea how much installation would be and what is involved which is ripping out the backseat, trunk lining and pillars. I think my shop quoted me almost a grand for labor and the part is like $300 bucks. I passed.

In terms of body roll, through my research the feedback is that lowering springs will do nothing to improve body roll. Money better spent on sway bars and braces.

[beyondm3]

I am certainly more inclined to look at sway bars at this point vs doing springs, I actually have zero interest in doing springs. I was just hoping it was an easy grab to update the rear sway to the M5 version as it was on older generations.

[Joe-BMW33]

Originally Posted by beyondm3

I am certainly more inclined to look at sway bars at this point vs doing springs, I actually have zero interest in doing springs. I was just hoping it was an easy grab to update the rear sway to the M5 version as it was on older generations.

Same, I am following. I don't love the body roll, especially since my 2003 18-year old E39 handles better.

[Superjackson]

Lowering springs do improve body roll, and install should only be about 500.

[ksoze]

Originally Posted by Superjackson

Lowering springs do improve body roll, and install should only be about 500.

Dinan quotes 8.7 hours for install.

[Joe-BMW33]

Originally Posted by Superjackson

Lowering springs do improve body roll, and install should only be about 500.

Ha, I wish. Where did you get it done for $500? It is a 9 hour job. And they don't improve body roll enough to notice at 0.75 inches. Maybe a slammed car with angled spacers..

[Superjackson]

Originally Posted by Joe-BMW33

Ha, I wish. Where did you get it done for $500? It is a 9 hour job. And they don't improve body roll enough to notice at 0.75 inches. Maybe a slammed car with angled spacers..

I had h&r springs installed at a shop near Toronto for 500 cad with alignment, then swapped to kw v3 also for around 500 cad at another shop nearby as well. The h&r definitely improved body roll a decent amount so I expect the dinan springs would help a little as well even if not as low. It's just natural that lower and stiffer springs will improve body roll especially with the added negative camber in the front from lowering.

[430Scud]

Springs can reduce body roll through the stiffer (firmer) spring rate. Lowering is a separate feature/function. Most lowering springs have an increased spring rate and will reduce body roll. But you need to ask the manufacturer how much firmer/stiffer the springs are over stock.

I have done suspension modifications on multiple (street) cars, and found springs and shocks to make the biggest difference in body roll reduction (but depends on how much stiffer the springs and shocks you select) Second would be anti-roll bars, and lastly strut/stress/chassis reinforcements.

I don't have the exact specs, but from reading sales literature and reviews, the H&R lower a bit more and are a bit stiffer, than the Dinan option. I would suspect the H&R will reduce body roll more, since they are (presumably) firmer.

[maDjzo]

Lowered with Dinan, immediate notice of reduced body roll. More planted and confidence inspiring, feels like a slightly smaller car. I have DHP equipped and honestly turn in is super tight now, impressive. Love the .75 drop in front and rear. Opted to not go for H&R as the drop, for me looks a bit too slammed especially in front for my taste anyways. Car handles better now and hides the weight a bit more. Highly recommend this setup for anyone that still wants to maintain comfort, but stiffen things up a bit, whilst having a modest drop. Paid $600 in labor at my shop, tri-state area.

[Dasky_spas]

Originally Posted by maDjzo

Lowered with Dinan, immediate notice of reduced body roll. More planted and confidence inspiring, feels like a slightly smaller car. I have DHP equipped and honestly turn in is super tight now, impressive. Love the .75 drop in front and rear. Opted to not go for H&R as the drop, for me looks a bit too slammed especially in front for my taste anyways. Car handles better now and hides the weight a bit more. Highly recommend this setup for anyone that still wants to maintain comfort, but stiffen things up a bit, whilst having a modest drop. Paid $600 in labor at my shop, tri-state area.

Which shop did you go to? I'll throw in V3s.

[maDjzo]

Originally Posted by Dasky_spas

Which shop did you go to? I'll throw in V3s.

Kings Automotive is my go to shop.