[M-terkait]

So what do you guys preffer for a small mod for 704 suspension ( Msport Passive)
Dinan springs or Sport H&R
interms of performance ofc.



-I don't to be low as SuperSport as I'll scrap every bump with supersport.

[jbrskissummitcolo]

Originally Posted by BigVegas17

I would assume not given all the dimensional differences between the 3 and 4 - but am tracking down a definite answer myself with my sales guy's help. I am itching to put dinan springs on my 435x - likely +shockware given the initial reviews I am reading.

Will let you know what I find out.

What have you found out ?
When will Dinan come out with something for the 435X drive ?!?!

My buddy bought a 435 RWD car with M-sport package and I have buyers remorse for choosing to get a car with X-drive (or not choosing an S5)

When I look at the side profiles of our two cars I am bothered by the rake of the x drive car being higher in the front. The door sill seems to angle just slightly upwards to the front of the car. The RWD M-sport car has a bit of downward rake to the front so the differences at the front are exaggerated. The gap above the front tires is just huge on the x-drive - over 2 inches and it's about an inch in back.

I would like the same look as my Audi sedan (factory sport suspension) that has minimal gap at the back and level or slightly downward rake when I look at the door sills.

Did BMW make the car so tall for clearance in the suspension/drive train parts that are different on the X drive?
I can think of no other reason that the car is so tall and that they didn't offer a sport suspension.

Do you have any concern about suspension clearance and/or drivetrain mechanical issues at different angles when the car is lowered?

The Dinan springs for 335Xdrive say they lower 20mm - this is a typical number when looking at a factory sport suspension difference - It would still leave my Xdrive car taller than a RWD m-sport car but if the extra clearance is needed for reasons I don't know, my hope is that a drop of only 20mm won't cause issues with the parts I can't see.

I would be reluctant to consider a drop that is lower than that and (partially) for that reason I don't consider the H & R springs.

If the H & R application guide had useful, instead of confusing, information it might make me consider their product. The application guide says that the drop in ride height on a 435X is 1 inch on a car with sport suspension and 1.5 inches on a car without sport suspension - Did BMW come out with a sport suspension on the 435Xdrive when I wasn't looking?

Last time I checked there was only one spring type available for the F32 Xdrive.
Somewhere I found the BMW spring calculator and looked at all the various spring choices for 4 series, 3 series and 2 series.
On a 4 series, the spring part numbers are the same if the car has standard shocks or DHP shocks. (not true on 3 series)
The final digits of the part number of the front springs seems to be higher for heavier cars. The last digits range from 919 to 924 My car, a manual, has the "lighter" of the two options for a 435x. The part number ends in 923. A 435Xdrive automatic uses the part number ending in 924. At the other end of the scale a 228 or 320 (with DHP) would use the 919 spring.

I have considered changing from DHP front springs with part number 31.33.6.851.923 to 31.33.6.851.922 (application is 435 I and 428 XI)

Does anyone know if this series of part numbers for front springs have the same rate and are just built to a different free length or are the rates different?

I am tempted to get that next lower number set of springs to put on my car figuring that the front end will sit slightly lower and give the car a proper rake. Overall height will be barely affected, but at least it will address one of my gripes.

The 6 part numbers for the front springs are pretty easy to decipher since all 2, 3 and 4 series cars with DHP use one of the 6 part numbers depending upon engine/transmission and other option combination. Unfortunately there is no easy way to figure a rhyme or reason to the rear spring part numbering.

[BigVegas17]

Haven't heard anything. My salesman said he would reach out when they got something definitive from dinan on a release date. He's been really good at following through so it's the waiting game.

[cjack]

Originally Posted by jbrskissummitcolo

What have you found out ?
When will Dinan come out with something for the 435X drive ?!?!

My buddy bought a 435 RWD car with M-sport package and I have buyers remorse for choosing to get a car with X-drive (or not choosing an S5)

When I look at the side profiles of our two cars I am bothered by the rake of the x drive car being higher in the front. The door sill seems to angle just slightly upwards to the front of the car. The RWD M-sport car has a bit of downward rake to the front so the differences at the front are exaggerated. The gap above the front tires is just huge on the x-drive - over 2 inches and it's about an inch in back.

I would like the same look as my Audi sedan (factory sport suspension) that has minimal gap at the back and level or slightly downward rake when I look at the door sills.

Did BMW make the car so tall for clearance in the suspension/drive train parts that are different on the X drive?
I can think of no other reason that the car is so tall and that they didn't offer a sport suspension.

Do you have any concern about suspension clearance and/or drivetrain mechanical issues at different angles when the car is lowered?

The Dinan springs for 335Xdrive say they lower 20mm - this is a typical number when looking at a factory sport suspension difference - It would still leave my Xdrive car taller than a RWD m-sport car but if the extra clearance is needed for reasons I don't know, my hope is that a drop of only 20mm won't cause issues with the parts I can't see.

I would be reluctant to consider a drop that is lower than that and (partially) for that reason I don't consider the H & R springs.

If the H & R application guide had useful, instead of confusing, information it might make me consider their product. The application guide says that the drop in ride height on a 435X is 1 inch on a car with sport suspension and 1.5 inches on a car without sport suspension - Did BMW come out with a sport suspension on the 435Xdrive when I wasn't looking?

Last time I checked there was only one spring type available for the F32 Xdrive.
Somewhere I found the BMW spring calculator and looked at all the various spring choices for 4 series, 3 series and 2 series.
On a 4 series, the spring part numbers are the same if the car has standard shocks or DHP shocks. (not true on 3 series)
The final digits of the part number of the front springs seems to be higher for heavier cars. The last digits range from 919 to 924 My car, a manual, has the "lighter" of the two options for a 435x. The part number ends in 923. A 435Xdrive automatic uses the part number ending in 924. At the other end of the scale a 228 or 320 (with DHP) would use the 919 spring.

I have considered changing from DHP front springs with part number 31.33.6.851.923 to 31.33.6.851.922 (application is 435 I and 428 XI)

Does anyone know if this series of part numbers for front springs have the same rate and are just built to a different free length or are the rates different?

I am tempted to get that next lower number set of springs to put on my car figuring that the front end will sit slightly lower and give the car a proper rake. Overall height will be barely affected, but at least it will address one of my gripes.

The 6 part numbers for the front springs are pretty easy to decipher since all 2, 3 and 4 series cars with DHP use one of the 6 part numbers depending upon engine/transmission and other option combination. Unfortunately there is no easy way to figure a rhyme or reason to the rear spring part numbering.

I'm in the same boat. Maybe KW will come out with something too. My preference is Dinan...

[M5Beast_NYC]

Where is the good place (good pricing) to get these Dinan springs?

[mikt01]

anyone here changed shocks as well? noticeable difference using these with upgraded shocks instead of stock?

[MickAv8r]

Originally Posted by Carbonm3ny

Where is the good place (good pricing) to get these Dinan springs?

bought mine from Dinan. Wait for a sale. I think I got them for 15% off and free shipping.

[Sharp_Cai]

Originally Posted by MDIVISION

I just ordered the Dinan Springs as well. I care about the ride quality more than if my car is 1/4 or 1/2 lower. I think Dinan is a better fit than H&R.

Looking forward to it

I am ordering the Dinan springs as well. Did you also order the handling kit? According to Dinan, these kits are meant to improve the riding quality. My dealership is still getting me the quote for installing both parts.

[vip]

Originally Posted by Sharp_Cai

I am ordering the Dinan springs as well. Did you also order the handling kit? According to Dinan, these kits are meant to improve the riding quality. My dealership is still getting me the quote for installing both parts.

what are your full tire specs, including offsets front and rear?

[Fraggy]

No Dinan springs for 428 yet?

[LastFrontierBimmer]

Originally Posted by jbrskissummitcolo

What have you found out ?
When will Dinan come out with something for the 435X drive ?!?!

My buddy bought a 435 RWD car with M-sport package and I have buyers remorse for choosing to get a car with X-drive (or not choosing an S5)

When I look at the side profiles of our two cars I am bothered by the rake of the x drive car being higher in the front. The door sill seems to angle just slightly upwards to the front of the car. The RWD M-sport car has a bit of downward rake to the front so the differences at the front are exaggerated. The gap above the front tires is just huge on the x-drive - over 2 inches and it's about an inch in back.

I would like the same look as my Audi sedan (factory sport suspension) that has minimal gap at the back and level or slightly downward rake when I look at the door sills.

Did BMW make the car so tall for clearance in the suspension/drive train parts that are different on the X drive?
I can think of no other reason that the car is so tall and that they didn't offer a sport suspension.

Do you have any concern about suspension clearance and/or drivetrain mechanical issues at different angles when the car is lowered?

The Dinan springs for 335Xdrive say they lower 20mm - this is a typical number when looking at a factory sport suspension difference - It would still leave my Xdrive car taller than a RWD m-sport car but if the extra clearance is needed for reasons I don't know, my hope is that a drop of only 20mm won't cause issues with the parts I can't see.

I would be reluctant to consider a drop that is lower than that and (partially) for that reason I don't consider the H & R springs.

If the H & R application guide had useful, instead of confusing, information it might make me consider their product. The application guide says that the drop in ride height on a 435X is 1 inch on a car with sport suspension and 1.5 inches on a car without sport suspension - Did BMW come out with a sport suspension on the 435Xdrive when I wasn't looking?

Last time I checked there was only one spring type available for the F32 Xdrive.
Somewhere I found the BMW spring calculator and looked at all the various spring choices for 4 series, 3 series and 2 series.
On a 4 series, the spring part numbers are the same if the car has standard shocks or DHP shocks. (not true on 3 series)
The final digits of the part number of the front springs seems to be higher for heavier cars. The last digits range from 919 to 924 My car, a manual, has the "lighter" of the two options for a 435x. The part number ends in 923. A 435Xdrive automatic uses the part number ending in 924. At the other end of the scale a 228 or 320 (with DHP) would use the 919 spring.

I have considered changing from DHP front springs with part number 31.33.6.851.923 to 31.33.6.851.922 (application is 435 I and 428 XI)

Does anyone know if this series of part numbers for front springs have the same rate and are just built to a different free length or are the rates different?

I am tempted to get that next lower number set of springs to put on my car figuring that the front end will sit slightly lower and give the car a proper rake. Overall height will be barely affected, but at least it will address one of my gripes.

The 6 part numbers for the front springs are pretty easy to decipher since all 2, 3 and 4 series cars with DHP use one of the 6 part numbers depending upon engine/transmission and other option combination. Unfortunately there is no easy way to figure a rhyme or reason to the rear spring part numbering.

My concerns exactly, with my recently purchased F32 435i xDrive MSport. Please post an update if you come up with a satisfactory solution. Thanks.

[cmonter3323]

does anyone know if they will be releasing any springs for the F36 428i???

[jinnrice]

Finally found this thread!! Will be getting the dinan on my f30 335 xdrive when this weather in Boston gets better...

[JoshVass]

Originally Posted by jinnrice

Finally found this thread!! Will be getting the dinan on my f30 335 xdrive when this weather in Boston gets better...

Same here can't wait for spring/summer

[Damon44]

Originally Posted by JoshVass

Same here can't wait for spring/summer

+1
all that extra power needs a more stable platform!

[bbog2008]

I need some help.

I have the Dinan performance springs and stops installed on my xdrive with conventional shocks. The car is flat on turns and when accelerating and braking.
BUT it feels odd on uneven roads - the front feels soft the rear feels rough (hard). It bounce up and down on bumpy roads - it feels unsettled. Also the back jolts up every time a drive over a speed bump, while the front seems flat.
So I measured the stance front and back - and I get from the top of 18" rim edge to the underside of the body (wheel arch) - 4-1/8" in the front and 3-3/8" in the back. It sits lower in the back than in the front.

Could anybody measure his/her's and provide some info?
Do you get the same ride issues?

Thank you.

[ClubsportJunkie]

Originally Posted by bbog2008

I need some help.

I have the Dinan performance springs and stops installed on my xdrive with conventional shocks. The car is flat on turns and when accelerating and braking.
BUT it feels odd on uneven roads - the front feels soft the rear feels rough (hard). It bounce up and down on bumpy roads - it feels unsettled. Also the back jolts up every time a drive over a speed bump, while the front seems flat.
So I measured the stance front and back - and I get from the top of 18" rim edge to the underside of the body (wheel arch) - 4-1/8" in the front and 3-3/8" in the back. It sits lower in the back than in the front.

Could anybody measure his/her's and provide some info?
Do you get the same ride issues?

Thank you.

That wheel arch in the front seems off compared to the back (you're right). I wonder if you're running 335i shocks in the front...I'll report back tomorrow on how my 435i feels (I'm getting the shocks and shockware installed Hopefully I dont have this problem ).

[sandwi54]

Originally Posted by bbog2008

I need some help.

I have the Dinan performance springs and stops installed on my xdrive with conventional shocks. The car is flat on turns and when accelerating and braking.
BUT it feels odd on uneven roads - the front feels soft the rear feels rough (hard). It bounce up and down on bumpy roads - it feels unsettled. Also the back jolts up every time a drive over a speed bump, while the front seems flat.
So I measured the stance front and back - and I get from the top of 18" rim edge to the underside of the body (wheel arch) - 4-1/8" in the front and 3-3/8" in the back. It sits lower in the back than in the front.

Could anybody measure his/her's and provide some info?
Do you get the same ride issues?

Thank you.

I have the exact problem on my wife's 328i xDrive with Dinan Springs + bump stops - the car is flat in turns but pretty bouncy on bumpy roads. Of course all cars including my M3 bounces a bit, but it just feels that the Dinan springs takes a lot longer to settle. Also, the front bottoms out easily when going over speed bumps. If I do not go at a very slow speed, the front crashes.

I am now considering going with a coilover setup to remove these undesired traits. Now I can see why a lot of people recommend coilover to begin with.

[tboooe]

I think this is a common problem caused by the mismatch between the springs and shocks. Getting a more matched aftermarket shock like Bilstein will definitely help. This is why I only get coilovers.

[F30_335]

Just installed Dinan springs and Ride Quality & Handling Kit. Drive comfort and performance is perfect for me but I have one question. Look like rear side drop much than front.
335ix DHP
Before:


After:


If this normal?

[jinnrice]

Isn't this normal? I always find it that the front wheel arch is set higher than the rear. Hence to keep the car level from front to back, the rear will be lower more. Unless like the m3/m4 counterpart. The rear is tilted higher. Slight slant to the front.

[tboooe]

Originally Posted by F30_335

If this normal?

By your pics it looks like the front didnt drop at all? That being said, give it time to settle. I have heard of many people who use springs that this reverse rake has happened to but the springs will settle in. Thats one of the main reasons why I only go with coilovers so I can dial in the ride height exactly the way I want.

I just measured the distance to the top of the wheel well from a fixed point on the wheel and on my F36 with stock suspension there is only a 3/16" difference between the front and rear (the front is higher). Your pics look like there is a much bigger difference even before the springs?