Bimmerpost
3
/
4 Series
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Technical Topics Suspension / Chassis / Brakes Should I lower M340i?

Post Reply
 
Thread Tools Search this Thread
      08-24-2020, 07:55 PM   #1
G80JL
Enlisted Member
G80JL's Avatar
10
Rep
33
Posts

Drives: M3 G80
Join Date: Aug 2020
Location: ORANGE COUNTY

iTrader: (0)

Should I lower M340i?

Should this car be lowered? I just switched from an M3 and this car is pretty high compared to the M3.
Appreciate 0
      08-24-2020, 09:03 PM   #2
longlasting
Second Lieutenant
47
Rep
229
Posts

Drives: 2015 m3
Join Date: Apr 2014
Location: bay area SF

iTrader: (2)

I lowered my M340i with dinan springs. Made a little difference. 1 inch all around
Appreciate 0
      08-25-2020, 11:49 PM   #3
Swagasaurus-R3X
Private
Swagasaurus-R3X's Avatar
United_States
45
Rep
59
Posts

Drives: BMW M340i
Join Date: May 2020
Location: Tracy, CA

iTrader: (0)

Lots of ways to do it. Dinan springs and bump stocks for 1" all around, K&W variant for a minimum of 1.7" up to 0.98" drop, or H&R for a 1.3" drop. There have been a few topics on it so far through the threads. You can search the manufacturers through the search bar at the top to see some reviews.

In regards to should you? I mean really it's up to you. Go low or no is the question. I remember when I had a 2.5" lowered Lexus IS. It was definitely better looking close to the ground but you have to be ok with not have a perfect front bumper and taking every bump in the road seriously. I've thought about Dinan for my M340i, they keep warranty but only give a super small drop. The H&Rs are at least 1.3, which will actually try to even cover those top treads from sticking out. K&W though is probably the best in the market. $2k for some K&Ws might be nearly 3/4 of a grand more than what you should be paying but they are a great manufacturer. Besides that nothing else on the market worth noting now. I would go with the K&Ws and probably go max height.
Appreciate 0
      08-26-2020, 09:51 AM   #4
Cabby
Captain
United_States
340
Rep
632
Posts

Drives: 2019 X740i
Join Date: May 2007
Location: JAX

iTrader: (0)

Garage List
2020 BMW M340xi  [0.00]
2019 BMW X7  [0.00]
Quote:
Originally Posted by Swagasaurus-R3X View Post
Lots of ways to do it. Dinan springs and bump stocks for 1" all around, K&W variant for a minimum of 1.7" up to 0.98" drop, or H&R for a 1.3" drop. There have been a few topics on it so far through the threads. You can search the manufacturers through the search bar at the top to see some reviews.

In regards to should you? I mean really it's up to you. Go low or no is the question. I remember when I had a 2.5" lowered Lexus IS. It was definitely better looking close to the ground but you have to be ok with not have a perfect front bumper and taking every bump in the road seriously. I've thought about Dinan for my M340i, they keep warranty but only give a super small drop. The H&Rs are at least 1.3, which will actually try to even cover those top treads from sticking out. K&W though is probably the best in the market. $2k for some K&Ws might be nearly 3/4 of a grand more than what you should be paying but they are a great manufacturer. Besides that nothing else on the market worth noting now. I would go with the K&Ws and probably go max height.
It's not that black and white. Having Xdrive and Adaptive suspension greatly reduces your choices, like to zero.
Appreciate 1
WWM3956.50
      08-26-2020, 10:57 PM   #5
Swagasaurus-R3X
Private
Swagasaurus-R3X's Avatar
United_States
45
Rep
59
Posts

Drives: BMW M340i
Join Date: May 2020
Location: Tracy, CA

iTrader: (0)

Quote:
Originally Posted by Cabby View Post
Quote:
Originally Posted by Swagasaurus-R3X View Post
Lots of ways to do it. Dinan springs and bump stocks for 1" all around, K&W variant for a minimum of 1.7" up to 0.98" drop, or H&R for a 1.3" drop. There have been a few topics on it so far through the threads. You can search the manufacturers through the search bar at the top to see some reviews.

In regards to should you? I mean really it's up to you. Go low or no is the question. I remember when I had a 2.5" lowered Lexus IS. It was definitely better looking close to the ground but you have to be ok with not have a perfect front bumper and taking every bump in the road seriously. I've thought about Dinan for my M340i, they keep warranty but only give a super small drop. The H&Rs are at least 1.3, which will actually try to even cover those top treads from sticking out. K&W though is probably the best in the market. $2k for some K&Ws might be nearly 3/4 of a grand more than what you should be paying but they are a great manufacturer. Besides that nothing else on the market worth noting now. I would go with the K&Ws and probably go max height.
It's not that black and white. Having Xdrive and Adaptive suspension greatly reduces your choices, like to zero.
https://www.kwsuspensions.net/produc...8ccm_u4C5ACOBx*HOWcP6h3ASag~~/56/Street_Performance/152200DM

??
Appreciate 0
      08-27-2020, 08:56 AM   #6
Cabby
Captain
United_States
340
Rep
632
Posts

Drives: 2019 X740i
Join Date: May 2007
Location: JAX

iTrader: (0)

Garage List
2020 BMW M340xi  [0.00]
2019 BMW X7  [0.00]
Quote:
Originally Posted by Swagasaurus-R3X View Post
https://www.kwsuspensions.net/produc...8ccm_u4C5ACOBx*HOWcP6h3ASag~~/56/Street_Performance/152200DM

??
"Electronic dampening control has to be deactivated. Deactivation kit is included."
Appreciate 0
      08-27-2020, 11:14 AM   #7
TheDudeMan
First Lieutenant
TheDudeMan's Avatar
Ukraine
252
Rep
380
Posts

Drives: 20' 330i & RX 350
Join Date: Aug 2020
Location: SF Bay Area

iTrader: (0)

The realy question is outside of height, what are you looking to accomplish?
Appreciate 0
      08-28-2020, 01:03 PM   #8
Gdiddy23
Major
906
Rep
1,168
Posts

Drives: 2020 M340i
Join Date: Dec 2018
Location: St. Paul, MN

iTrader: (1)

Garage List
2015 BMW F30  [0.00]
Quote:
Originally Posted by TheDudeMan View Post
The realy question is outside of height, what are you looking to accomplish?
Coilovers not only lower the car but improve center of gravity and will make the car handle better. One of the best upgrades you can make to a vehicle IMO
__________________
2020 M340xi PB (sold)
2020 Ram 1500 Laramie (Daily)
2019 Shelby GT350R (Weekend)
Appreciate 0
      08-28-2020, 02:58 PM   #9
TheDudeMan
First Lieutenant
TheDudeMan's Avatar
Ukraine
252
Rep
380
Posts

Drives: 20' 330i & RX 350
Join Date: Aug 2020
Location: SF Bay Area

iTrader: (0)

Quote:
Originally Posted by Gdiddy23 View Post
Coilovers not only lower the car but improve center of gravity and will make the car handle better. One of the best upgrades you can make to a vehicle IMO
umm, yes. Not arguing that as it's absolutely correct.

Let me add some context.

Is the OP looking to just reduce wheel gap or gain performance that can help close the gap between the 340 and M3 - I say close because it will never be the same or better.

With that said, coilovers cost the same if not less to install as spings. Some costs could be made up there. Even better if you do the work yourself. In addition, coilovers are also inherently better because the shocks and springs are tuned for one another and the chassis. Not to mention the adjustability to fine tune vehicle height.

Furthermore, if you have a lease, you can remove the coilovers and retain roughly 70% of the value for resale. Same can't be said for the springs.

If springs are still considered, I would go with Dinan as the drop is minimal which is healthier on the OEM shocks.

Ultimately to each their own, but there are good to better options when lowering. Personally, I have never trusted springs and always go the coilover route or keep it stock.
Appreciate 0
      08-28-2020, 08:51 PM   #10
Gdiddy23
Major
906
Rep
1,168
Posts

Drives: 2020 M340i
Join Date: Dec 2018
Location: St. Paul, MN

iTrader: (1)

Garage List
2015 BMW F30  [0.00]
Quote:
Originally Posted by TheDudeMan View Post
Quote:
Originally Posted by Gdiddy23 View Post
Coilovers not only lower the car but improve center of gravity and will make the car handle better. One of the best upgrades you can make to a vehicle IMO
umm, yes. Not arguing that as it's absolutely correct.

Let me add some context.

Is the OP looking to just reduce wheel gap or gain performance that can help close the gap between the 340 and M3 - I say close because it will never be the same or better.

With that said, coilovers cost the same if not less to install as spings. Some costs could be made up there. Even better if you do the work yourself. In addition, coilovers are also inherently better because the shocks and springs are tuned for one another and the chassis. Not to mention the adjustability to fine tune vehicle height.

Furthermore, if you have a lease, you can remove the coilovers and retain roughly 70% of the value for resale. Same can't be said for the springs.

If springs are still considered, I would go with Dinan as the drop is minimal which is healthier on the OEM shocks.

Ultimately to each their own, but there are good to better options when lowering. Personally, I have never trusted springs and always go the coilover route or keep it stock.
Sorry I misunderstood your comment! I know see you're probs more well versed than I am lol

Reason I haven't considered coilovers yet is bc mine is leased so it's good to know they're easy to uninstall if needed. My F30 335 was bought w them recently installed and sold them with them installed
__________________
2020 M340xi PB (sold)
2020 Ram 1500 Laramie (Daily)
2019 Shelby GT350R (Weekend)
Appreciate 1
      08-29-2020, 04:20 PM   #11
TheDudeMan
First Lieutenant
TheDudeMan's Avatar
Ukraine
252
Rep
380
Posts

Drives: 20' 330i & RX 350
Join Date: Aug 2020
Location: SF Bay Area

iTrader: (0)

Quote:
Originally Posted by Gdiddy23 View Post
Sorry I misunderstood your comment! I know see you're probs more well versed than I am lol

Reason I haven't considered coilovers yet is bc mine is leased so it's good to know they're easy to uninstall if needed. My F30 335 was bought w them recently installed and sold them with them installed
Totally understand. I'm in the same boat as you are. I leased my 330i - probably and want to lower it but cannot decide which method. I'm wondering if I can get a set of Dinian spings(when they come out) and just leave them in when I return the car. My thoughts are, that if BMW sells and vouches for the product, why would they care if I install them on a leased car. It can add value down the line during the resale, but who knows.


The way I rationalize mods on a lease is if you can do the work your self, which I always try, their's minimal cost out of pocket within the lease period. It's similar to the lease lol. You only pay depreciation on coilovers since you'll be reselling them when they are removed. Yes, your lobor is time/money, but if it's a hobby/passion, who cares.

Coilover wise, I was thinking of going with a set of Bilstien Evo S early next year. https://www.summitracing.com/parts/bsn-47-300118
Appreciate 0
      08-29-2020, 11:16 PM   #12
Gdiddy23
Major
906
Rep
1,168
Posts

Drives: 2020 M340i
Join Date: Dec 2018
Location: St. Paul, MN

iTrader: (1)

Garage List
2015 BMW F30  [0.00]
Nice!

I had KW's on my 335 and loved those. Would go w them again if I do go that route. Plus if I'm not mistaken they may be the only coilovers on the market right now for the M340?
__________________
2020 M340xi PB (sold)
2020 Ram 1500 Laramie (Daily)
2019 Shelby GT350R (Weekend)
Appreciate 0
      09-03-2020, 03:27 PM   #13
Rocket455
Grumpysaurus Rex
Rocket455's Avatar
United_States
481
Rep
423
Posts

Drives: 2022 M550i
Join Date: Jan 2020
Location: San Diego, CA

iTrader: (0)

Garage List
1972 Firechicken  [0.00]
1969 Toronado  [0.00]
1970 Camaro  [0.00]
Quote:
Originally Posted by TheDudeMan View Post
Is the OP looking to just reduce wheel gap or gain performance.
Bingo. I think this is the most crucial (and often left out) piece of information in many of the suspension/handling threads I've seen.
__________________
“Science has made us gods even before we are worthy of being men.”

Last edited by Rocket455; 09-03-2020 at 03:53 PM..
Appreciate 1
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 10:53 AM.




g20
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST