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Technical Topics Suspension / Chassis / Brakes NEW RELEASE: Dinan BMW G20 M340i (RWD) Springs/Bumpstops & Monoballs

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      01-11-2021, 09:36 AM   #89
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Been waiting on this! Just placed an order for the springs and supplement ride kit for the 330i xDrive. Perfect timing as my wheels are expected to land from Japan next month.

I have non-adaptive M Sport suspension, hoping all the parts are compatible.
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      01-12-2021, 09:07 AM   #90
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Quote:
Originally Posted by TheDudeMan View Post
LOL, why not rent one and get it over with. Small price to pay to make a lot of people happy + profit.
Yea I've been waiting on this as I don't want a drastic drop... may just go with H&R if the RWD option does not happen in the next couple of months.
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      01-12-2021, 09:54 AM   #91
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Quote:
Originally Posted by pcube View Post
Yea I've been waiting on this as I don't want a drastic drop... may just go with H&R if the RWD option does not happen in the next couple of months.
ACS is another option for a mild drop.

https://www.acschnitzer-us.com/ac-sc...20-sedan/p2438
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      01-13-2021, 08:46 AM   #92
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Quote:
Originally Posted by njfoses View Post
ACS is another option for a mild drop.

https://www.acschnitzer-us.com/ac-sc...20-sedan/p2438
Yea, but kinda overpriced for springs...
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      01-13-2021, 07:19 PM   #93
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Does these springs make the car look even ? My m340i seems to be a tad bit higher upfront on stock height
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      01-15-2021, 09:49 AM   #94
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Quote:
Originally Posted by rrfitness20 View Post
Does these springs make the car look even ? My m340i seems to be a tad bit higher upfront on stock height
5/8" drop with 7% stiffness in the front and 3/4" drop with 34% stiffness in the rear. Here is the link to the product.
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      01-16-2021, 02:02 AM   #95
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Does anyone know if there is a HAS kit available for the M340ix? any reputable brand will do
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      02-22-2021, 12:03 AM   #96
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Dinan_Engineering

Any word on the 330i RW Springs? I'm dying here waiting!
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      02-22-2021, 07:10 AM   #97
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Quote:
Originally Posted by TheDudeMan View Post
Dinan_Engineering

Any word on the 330i RW Springs? I'm dying here waiting!
Will be officially released by early March. Crossing T's and dotting I's, etc...
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      02-22-2021, 09:39 PM   #98
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Quote:
Originally Posted by Dinan_Engineering View Post
Will be officially released by early March. Crossing T's and dotting I's, etc...
Awesome man! I'll hold off order H&Rs.
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      03-01-2021, 03:39 AM   #99
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Quote:
Originally Posted by Dinan_Engineering View Post
Will be officially released by early March. Crossing T's and dotting I's, etc...
Details please! Expected drop for front and rear?
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      03-04-2021, 08:41 AM   #100
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Quote:
Originally Posted by TheDudeMan View Post
Awesome man! I'll hold off order H&Rs.
Quote:
Originally Posted by pcube View Post
Details please! Expected drop for front and rear?
Released as of this morning. Original post updated but details can be found at dinan.info/G20-330-RWD-SK as well.
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      03-04-2021, 08:50 AM   #101
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Quote:
Originally Posted by Dinan_Engineering View Post
Released as of this morning. Original post updated but details can be found at dinan.info/G20-330-RWD-SK as well.
The product listing may be confusing to some as it can be read as only being applicable to RWD for both the 330i and M340i and not just RWD for the M340i as intended.
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      03-04-2021, 10:08 AM   #102
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Quote:
Originally Posted by njfoses View Post
The product listing may be confusing to some as it can be read as only being applicable to RWD for both the 330i and M340i and not just RWD for the M340i as intended.
Changed. Was hoping the original would be understood as adding the extra text just makes it so long but the immediate call out to it I guess stymies that hope. =)
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      03-04-2021, 08:52 PM   #103
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Quote:
Originally Posted by Dinan_Engineering View Post
Released as of this morning. Original post updated but details can be found at dinan.info/G20-330-RWD-SK as well.
Ordered.
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      03-05-2021, 03:45 AM   #104
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Quote:
Originally Posted by Dinan_Engineering View Post
Released as of this morning. Original post updated but details can be found at dinan.info/G20-330-RWD-SK as well.
7-95% increase in spring stiffness in front and 34-92% in the rear depending on stock spring configuration (330i)

Woah... I was just about to click the order button but thought to look through the specs one more time. Under what situation will the stiffness increase by over 90%?
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      03-05-2021, 06:53 AM   #105
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Quote:
Originally Posted by pcube View Post
7-95% increase in spring stiffness in front and 34-92% in the rear depending on stock spring configuration (330i)

Woah... I was just about to click the order button but thought to look through the specs one more time. Under what situation will the stiffness increase by over 90%?
STD/Base (Non-Msport), Non-adaptive suspension on a RWD car. The stock rates are INCREDIBLY SOFT. Had to check the numbers ourselves multiple times but thats what it comes down to. I think njfoses can verify however that while the percentage seems high it isn't nearly as stiff as you may expect and retains comfort. Trying to get the exact percentage from engineering but the comment was made that they are softer then the previous generation 3 series by a good margin which were quite a bit softer then the E9x chassis before it. Definitely a trend...

THE DATA:
In stock trims---
Compared to F30 335i, the G20 330i RWD is:
Front is 32% softer
Rear is 25% softer

Compared to F30 340i, the G20 330i RWD is:
Front is 34% softer
Rear is 23% softer

Last edited by Dinan_Engineering; 03-05-2021 at 10:38 AM.. Reason: Added data.
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      03-05-2021, 08:10 AM   #106
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Quote:
Originally Posted by Dinan_Engineering View Post
STD/Base (Non-Msport), Non-adaptive suspension on a RWD car. The stock rates are INCREDIBLY SOFT. Had to check the numbers ourselves multiple times but thats what it comes down to. I think njfoses can verify however that while the percentage seems high it isn't nearly as stiff as you may expect and retains comfort. Trying to get the exact percentage from engineering but the comment was made that they are softer then the previous generation 3 series by a good margin which were quite a bit softer then the E9x chassis before it. Definitely a trend...
pcube It was my rwd non M sport 330i that Dinan used for spring fitment. I concur that the stock springs on my vehicle were very soft. Yes the Dinan springs are noticeably stiffer, but i do not consider the ride uncomfortable at all. I'm sure the stock M sport springs are already stiffer than the non M springs i had on my car.
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      03-05-2021, 08:05 PM   #107
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Quote:
Originally Posted by Dinan_Engineering View Post
STD/Base (Non-Msport), Non-adaptive suspension on a RWD car. The stock rates are INCREDIBLY SOFT. Had to check the numbers ourselves multiple times but thats what it comes down to. I think njfoses can verify however that while the percentage seems high it isn't nearly as stiff as you may expect and retains comfort. Trying to get the exact percentage from engineering but the comment was made that they are softer then the previous generation 3 series by a good margin which were quite a bit softer then the E9x chassis before it. Definitely a trend...

THE DATA:
In stock trims---
Compared to F30 335i, the G20 330i RWD is:
Front is 32% softer
Rear is 25% softer

Compared to F30 340i, the G20 330i RWD is:
Front is 34% softer
Rear is 23% softer
Dinan_Engineering I gather then that the Dinan springs are slightly stiffer than the Msport (non adaptive) springs?
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      03-05-2021, 08:10 PM   #108
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Quote:
Originally Posted by njfoses View Post
pcube It was my rwd non M sport 330i that Dinan used for spring fitment. I concur that the stock springs on my vehicle were very soft. Yes the Dinan springs are noticeably stiffer, but i do not consider the ride uncomfortable at all. I'm sure the stock M sport springs are already stiffer than the non M springs i had on my car.
njfoses Was there a noticeable difference in comfort level though? I am concerned that the springs would make the ride clunky... and I also kinda like that the stock suspension setup absorbs almost all road imperfections.
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      03-06-2021, 07:14 AM   #109
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Quote:
Originally Posted by pcube View Post
njfoses Was there a noticeable difference in comfort level though? I am concerned that the springs would make the ride clunky... and I also kinda like that the stock suspension setup absorbs almost all road imperfections.
Any lowering spring/coilover is going to be a stiffer ride than stock. What is comfortable for me may not be comfortable for you. My wife has been in the car a few times since the install and she has not complained about the ride quality, so there's that.
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      03-06-2021, 06:56 PM   #110
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Quote:
Originally Posted by njfoses View Post
Any lowering spring/coilover is going to be a stiffer ride than stock. What is comfortable for me may not be comfortable for you. My wife has been in the car a few times since the install and she has not complained about the ride quality, so there's that.
Cool. Can you post some pictures?
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