[CSBM5]

Originally Posted by Montaver

You will not be disappointed with the adaptive. Having also owned an M2C and E90 M3, I would say the damping is superior to both (particularly the M2C). It deals with imperfections in one stroke and is overall very composed. It's supple but quick to react with no floatiness. It gets slightly more busy in sport (although I have my sport individual set to comfort suspension so rarely run it stiff) but still feels very well damped. Not sure what wheel and tire combo you ordered but the 225 square runflats are massively under tired for the power, I have a set of Apex to go on with 255 square soon.

If your coming directly from those two cars the steering will take some getting used to though. Firstly the steering wheel is stupidly thick and really irritating to hold compared to the M2C wheel for example. The rack itself is nicely quick and it makes the car feel eager to turn in, but its not linear which makes it feel somewhat unintuitive to make small corrections mid corner. Like anything though you get used to it, but it always feels a touch artificial. When I jump in my GT4 with its beautifully thin steering wheel and razor sharp linear rack it always feels more apparent when returning to the m340i.

Thanks for the feedback! It aligns with what a few others have told me also, so I'm looking forward to the experience but not to the non-linear steering, ugh.

I'll have plenty of comparisons with the M2C and E90 M3 as they're staying put (planning on a potential M3 auction in the spring though). I ordered the 792M staggered wheels, so 225 and 255 on 8" and 8.5" -- which to me is still stupidly undersized for the car's weight and especially power. 20 years ago when I bought an E46 330i ZHP it came with the same size wheels/tires (although 18" instead of 19") with probably 1/2 the whp and a lot less weight (6MT, slicktop). Heck even our beater E91 328i wagon is running Apex 9x18 with 235/40s.

I too am already pondering a set of Apex wheels for the M340i...was looking at 9x19 with 265/35-19 all around. My M3 is running 9.5/10.5x19 with 255/35 and 275/35-19. The M2C is still on stock 9"/10" 245/35 and 265/35-19.

[Montaver]

Originally Posted by CSBM5

Thanks for the feedback! It aligns with what a few others have told me also, so I'm looking forward to the experience but not to the non-linear steering, ugh.

I'll have plenty of comparisons with the M2C and E90 M3 as they're staying put (planning on a potential M3 auction in the spring though). I ordered the 792M staggered wheels, so 225 and 255 on 8" and 8.5" -- which to me is still stupidly undersized for the car's weight and especially power. 20 years ago when I bought an E46 330i ZHP it came with the same size wheels/tires (although 18" instead of 19") with probably 1/2 the whp and a lot less weight (6MT, slicktop). Heck even our beater E91 328i wagon is running Apex 9x18 with 235/40s.

I too am already pondering a set of Apex wheels for the M340i...was looking at 9x19 with 265/35-19 all around. My M3 is running 9.5/10.5x19 with 255/35 and 275/35-19. The M2C is still on stock 9"/10" 245/35 and 265/35-19.

I have a set of SM-10's to go on (well 3 of them, Apex sent one wrong color wheel) with 255/35 DWS06+. I thought about putting PS4S and running them for summer, but the 225 run flats are offensively bad from a grip perspective I cant take them anymore

My current project is upgrading the sound system as the stock HK is not great (although the stock M2C HK I found offensively bad). Not sure if you care as much about audio but that's the other clear area outside of tires the car can be easily improved.

[gonzobro]

I find the newer sport mode idrive options to be a bit gimicky in comparison to the older idrive. Whether the suspension and steering options make any difference I can't say. What I can say is full Sport+ is awesome for hammertime and anytime downshifting. Upshifting during spirited but not hammertime can rev to painful points like "why isn't it upshifting?!" Thanks for shedding some light.. I'm going to set individual sport mode to sport+ engine and sport tranny for spirited daily driving which is anywhere I can get away with massively exceeding speed limits on the way to work! Oh and hammertime for me is either a drag race or track time which I've only done in the 240.

[phanamous]

Had my 2024 M340i for 2 months now and didn't love the adaptive suspension as it feels under-dampen. Recently switch to much lighter wheels for summer and it's a totally different car now.

The lighter unsprung weight now seems to match the dampers just right, not overwhelming them. Really plush in Comfort mode now, less bouncy than before. Sport mode now feels like sport, stiffer then the M sport suspension from what I recall. Something to consider.

Very easy to add M1/M2 buttons to the steering wheel for easy drive mode toggling. Added magnetic paddles and a matte carbon face too while I was at it. Looks real slick now and gets me in the mood every time I get in the car. Makes Sport+/S mode manual shifting so much more fun now.

Originally Posted by CSBM5

Ugh. We didn't have the opportunity to drive an M340i with Adaptive M suspension, but we ordered one with it. It's 150 status now, so no changes allowed. Hopefully it won't be too bad. This reminds me of back in 2011 test driving the E90 M3 standard suspension vs the ZCP option (which on that car just meant 10mm shorter springs, retuned EDC damping programming), and I very much preferred the normal, non-EDC, struts/shocks suspension...especially over bumpy pavement while cornering.

I still have the E90 M3 and also an M2C, so I'll have direct back-to-back comparisons to those two once the M340i gets here. Fingers crossed that it meets pretty high expectations.

I do wish the M340i had programmable "M" buttons like on the M2C, but I assume there is some easy way to save a setup...my wife nor I have really dealt with Idrive 8 much other than a short test drive.

[SevenNine]

Originally Posted by phanamous

Had my 2024 M340i for 2 months now and didn't love the adaptive suspension as it feels under-dampen. Recently switch to much lighter wheels for summer and it's a totally different car now.

The lighter unsprung weight now seems to match the dampers just right, not overwhelming them. Really plush in Comfort mode now, less bouncy than before. Sport mode now feels like sport, stiffer then the M sport suspension from what I recall. Something to consider.

Very easy to add M1/M2 buttons to the steering wheel for easy drive mode toggling. Added magnetic paddles and a matte carbon face too while I was at it. Looks real slick now and gets me in the mood every time I get in the car. Makes Sport+/S mode manual shifting so much more fun now.

How do you add M1/M2 buttons on the M340? Which stock wheels did you have, how heavy are they and which new wheels did you switch to?

[bimmer456]

Originally Posted by tturedraider

There’s a lot of discussion about this and a lot of claims. Most of these claims prove to me the placebo effect is strong.

Here is a FACT. In the F30 the ONLY difference between sport and sport plus is that plus engages Dynamic Traction Control, just as if you pushed the DTC button. Dynamic Traction Control actually reduces traction control intervention. It allows a limited amount of wheel slip. Sport plus has no extra effect on the transmission or anything else.

There are many, many claims that it does more in the G20. I have never seen any technical information from BMW that indicates this is the case. If it is true, as far as I can uncover, BMW has never put out any information to advertise or publicize that. Here is an article from a well known BMW aftermarket brand that supports my belief that sport plus in the G20 is the same as in the F30. https://www.bimmer-tech.net/blog/ite...mode-explained

If anyone has any technical information or advertising from BMW that says sport plus does more in the G20 than it did in the F30 I hope they will post it here.

You have to drive it to know the difference, and for the F30 there's a difference if it's a B58 which is the same engine as G20, there's no difference in the N55 cars besides traction control being dialed back, those that claim otherwise have likely not driven a B58 car in sport plus to know that there's a difference.

[phanamous]

New wheels are Superspeed RF05RR 19x8.5 / 19X9.5 (19.6 / 20.8 lbs)
Stocks are 792M (28.4 / 30.6 lbs)

M1/M2 buttons from here for example:
https://infiniteautowerks.com/shop/i...m1-m2-buttons/

I took a chance getting everything from AliExpress and it all worked out. Youtube is your friend for installation.

Originally Posted by SevenNine

How do you add M1/M2 buttons on the M340? Which stock wheels did you have, how heavy are they and which new wheels did you switch to?

[phanamous]

Not sure if it's mentioned but shifts are faster with Sport+ too it feels like, on top of the higher RPM shift points. It still feels slow going into 2nd though, unlike the higher gears.

Looks like the xHP transmission tune will be a good thing as you'll be able get more aggressive shifts and able to reprogram the stock D and S shift points to your liking also for the different modes. Based on what I've read anyway.

[bimmer456]

Originally Posted by phanamous

Not sure if it's mentioned but shifts are faster with Sport+ too it feels like, on top of the higher RPM shift points. It still feels slow going into 2nd though, unlike the higher gears.

Looks like the xHP transmission tune will be a good thing as you'll be able get more aggressive shifts and able to reprogram the stock D and S shift points to your liking also for the different modes. Based on what I've read anyway.

You have to press more on the throttle in sport plus to get the most out of it otherwise you might experience some engine braking due to elevated shift points.

[SevenNine]

Originally Posted by phanamous

New wheels are Superspeed RF05RR 19x8.5 / 19X9.5 (19.6 / 20.8 lbs)
Stocks are 792M (28.4 / 30.6 lbs)

M1/M2 buttons from here for example:
https://infiniteautowerks.com/shop/i...m1-m2-buttons/

I took a chance getting everything from AliExpress and it all worked out. Youtube is your friend for installation.

I appreciate the info. What offsets did you choose for the wheels? Any spacers needed? Can you post photos with the new wheels on your car? And lastly, did you weigh the wheels to confirm the weight savings?

[G30M]

Originally Posted by bimmer456

You have to press more on the throttle in sport plus to get the most out of it otherwise you might experience some engine braking due to elevated shift points.

unless you have the European program, in which case sport plus goes mental sliding everywhere.

i flashed the software from Xdelete and my car is a different car in sport plus (remains very tame in sport and comfort)

[blue_seather]

Originally Posted by G30M

unless you have the European program, in which case sport plus goes mental sliding everywhere.

Wait, is this really a thing? I scared the hell out of myself the other day in my EU M440i xDrive. It was raining outside and I wanted to show a friend of mine how the artificial Iconic Sounds in Sport Plus sounded, so I hit the throttle and went sideways. Did not expect that at all.

[G30M]

Originally Posted by blue_seather

Wait, is this really a thing? I scared the hell out of myself the other day in my EU M440i xDrive. It was raining outside and I wanted to show a friend of mine how the artificial Iconic Sounds in Sport Plus sounded, so I hit the throttle and went sideways. Did not expect that at all.

i don't know, i have been trying for 3 years to get my car sideways in sport plus, can't do it in wet, dry, gravel, nothing

then i flashed XDelete (tuner tells me it flashes their "Stock" software onto my car and overwrites mine. guarantees it's a "stock" copy.)
well my car was going sideways and trying to launch it was spinning 4 wheels like crazy. sport plus only.

i don't know what they flashed but it was worth it.

[phanamous]

Front 19x8.5 ET25 5x112 CB66.6 (8.4mm poke vs. stock)
Rear 19X9.5 ET42 5X112 CB66.6 (10.7mm poke vs. stock)

No spacers. Looks perfect to me as I'm am not a fan of wheels poking out too much. Only downside with these wheels is they come in black only for those sizes.

Wheel weights from website. I've seen actual weights somewhere and they're within range. The difference is also really noticeable under acceleration / braking.

Originally Posted by SevenNine

I appreciate the info. What offsets did you choose for the wheels? Any spacers needed? Can you post photos with the new wheels on your car? And lastly, did you weigh the wheels to confirm the weight savings?

[SevenNine]

Originally Posted by phanamous

Front 19x8.5 ET25 5x112 CB66.6 (8.4mm poke vs. stock)
Rear 19X9.5 ET42 5X112 CB66.6 (10.7mm poke vs. stock)

No spacers. Looks perfect to me as I'm am not a fan of wheels poking out too much. Only downside with these wheels is they come in black only for those sizes.

Wheel weights from website. I've seen actual weights somewhere and they're within range. The difference is also really noticeable under acceleration / braking.

The wheels look great on your car. Mine will also be Skyscraper Grey. I think the black wheels complement the color well. You could powder coat the lip and part of the spokes in lighter color (polished look) to mimic the 792m bi-color theme.
You don't have lowering springs, right? This is stock height? Also, when you say "poke vs stock" you mean that the ET of the wheels is like having 8.4mm/10.7mm spacer?
I checked the website for info on the wheels and options. I like these wheels, so now I'm debating between those and the stock A90 Supra 19x9/19x10 wheels. They would be cheaper, if bought from Supra owner, but they are around 24-25 lbs. So lighter than the stock 792m, but heavier than your wheels.

[phanamous]

Yes. ET is like having 8.4mm/10.7mm spacers.
Black complements nicely the black shadowline bits on this car. Hoping they'll have their Gunmetal soon, to better hide the winter salt/dirt, as I'd like to get another set for winters.

Stock height with adaptive suspension. G20's suspension isn't very well tuned as the springs seems very linear making the ride not very compliant. These lighter wheels help to make it a bit more plush. Don't know if it'll do the same for the non-adaptive suspension though.

If suspensions are tuned well to the stock wheels weight, switching to lighter wheels tend to make the ride more choppy and worse. Likely will get Dinan springs as they're more progressive based on the feedbacks.

Originally Posted by SevenNine

The wheels look great on your car. Mine will also be Skyscraper Grey. I think the black wheels complement the color well. You could powder coat the lip and part of the spokes in lighter color (polished look) to mimic the 792m bi-color theme.
You don't have lowering springs, right? This is stock height? Also, when you say "poke vs stock" you mean that the ET of the wheels is like having 8.4mm/10.7mm spacer?
I checked the website for info on the wheels and options. I like these wheels, so now I'm debating between those and the stock A90 Supra 19x9/19x10 wheels. They would be cheaper, if bought from Supra owner, but they are around 24-25 lbs. So lighter than the stock 792m, but heavier than your wheels.

[G30M]

Originally Posted by phanamous

If suspensions are tuned well, switching to lighter wheels tend to make the ride more choppy and worse. Likely will get Dinan springs as they're more progressive based on the feedbacks.

Not my experience, I mounted 8kg 18"x9 wheels on mine with mildly stretched 245 40 18 pilot sport 4 and the car turned into a compliant cushioned race car

[bimmer456]

Originally Posted by G30M

i don't know, i have been trying for 3 years to get my car sideways in sport plus, can't do it in wet, dry, gravel, nothing

then i flashed XDelete (tuner tells me it flashes their "Stock" software onto my car and overwrites mine. guarantees it's a "stock" copy.)
well my car was going sideways and trying to launch it was spinning 4 wheels like crazy. sport plus only.

i don't know what they flashed but it was worth it.

It does say traction control is off in sport plus and people have said they can spin it but it will still intervene like if you let off the throttle. Throttle response is instant so I have lost grip if there was gravel on the road and started going a little sideways but was able to recover.

[zachBMW]

sport+ does keep RPM’s higher compared to normal Sport mode. Sport+ burns way more fuel but you get more pops and bangs. give or take i average around 22 MPG monthly in a stock G20 330i (B46 4 cylinder). Really only drive it in Sport+

[bimmer456]

Originally Posted by zachBMW

sport+ does keep RPM’s higher compared to normal Sport mode. Sport+ burns way more fuel but you get more pops and bangs. give or take i average around 22 MPG monthly in a stock G20 330i (B46 4 cylinder). Really only drive it in Sport+

They finally enabled sport plus on the b46 or did you code it?

[zachBMW]

i coded it using Bimmercode. i reccomend anyone picking it up and coding it on if they have a B46

[zachBMW]

also, does anyone know why they disabled sport+ for NA G20 330i’s?