Adaptive two-axle air suspension | BMW iX Hoist Review

With the BMW iX up on the hoist, Jordan walks you through the Double-wishbone front axle, five-link rear axle and adaptive two-axle air suspension.
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Outro:
Music from KZbin Audio Library [Aka YAL]
Music provided by RFM: • Video
#BMW #iX #xDrive50

[@lawrenceh.7011]

Jordan speaks with great engineering and technical prowess beyond his years. I look forward to watching his videos!

[@wilber8260]

Thanks for the great analysis! I must add, that in addition to your obvious engineering expertise, you are very good at presenting. Good elocution and good organization of the material. I was lucky enough to test drive one of these last weekend! It has kickass acceleration yet buttery smooth ride. My Teslas haven't been even remotely as good on ride quality. And, of course, it has plenty of impressive high tech stuff on the front screen for driver and passenger to play with. And the Big Butt front of the car doesnt look so bad in person. However, my local dealer wanted $108k for the car! It was Red/black like yours, but did NOT have as many options as yours. I look forward to your next videos about this very interesting new vehicle!

[@MunroLive]

Thanks Wilber

[@argus8888]

Laser pointer showed up great on the video. Better than a Carwow "Stick of Truth" 😀 and helps general viewers better track the discussion of parts that are deeper in the vehicle.

[@djwarren5081]

Just imagine Matt from Carwow doing one of these. Throwing a parcel shelf away, and prodding parts with the stick of truth 🙄

[@MrBadgas]

Great content. Jordan rocks it again. Especially the dance moves.🕺🏻

[@MunroLive]

Thank you

[@tralala8980]

Laser pointer is significant help in following and understanding, especially for non-techie like me. Please make in a standard!

[@creativemaplewoodworks4640]

Great video! It would be great to get a compare/contrast video between premium vs economy suspension/steering components.

[@MunroLive]

Great suggestion!

[@feger481]

Wow, in-depth, clear, concise, to the point, presentation. Love it, keep up the great work.

[@terrysullivan1992]

Jordan is one of the clearest presenters.

[@InternetDude]

That’s because rambling old man isn’t on the video LOL

[@Orbit353]

09:45 That lower control arm seems to be shared with (at least) the X5/X7. The hole is for attaching a mass damper (on the X5/X7), which apparently wasn't needed on the iX.

[@ScullyD-ee9jk]

It is an X5 control arm.

[@jbarvideo12]

Fabulous engineering design analysis Jordan. I particularly was impressed at your discussion of a virtual ball, the intersection of two lines. I am Not a Mechanical Engineer, so lots of what you were discussing went over my head, but much appreciated nevertheless. Your use of a laser pointer was Very Impressive.

[@MunroLive]

Thanks Jay

[@markplott4820]

OUTDATED horse & buggy design, outdated handling & suspension. TRY HARDER.

[@GTO33]

It would have been a good analysis if it was right. The name "virtual ball" is wrong by definition as the point of two ball bearings is to not have a fixed virtual axis. If you draw it up on paper you will se that the geometry makes KPI move duringe a turn. The result is that the scrub radus (distance between KPI and the wheel center) wil shift in oposite direction on oposite side of the car and with that, the torque steering forces on each side will cancel each other out. In european litterature its called variable scrub radius geometry, and it was itrodused on Audi A4/Passat B5 in 1995. Or, at least, that is what they teach in machanics class in Europe.

[@markplott4820]

@@GTO33 - two WONGS don't make it RIGHT.

[@GTO33]

@@markplott4820 What on erarth are u on about?

[@truman4956]

I learn so much when watching your videos. I would like to see some of Munro’s non automotive engineering videos as well.

[@keithrange4457]

I had the exact same thought when he was gliding left and right - Perfect interlude 😁😁😁

[@Czechbound]

*JORDAN* : This is very professional presenting. Prepared; knows his stuff; clear diction - Jordan gives us confidence that he knows what he's talking about. Well done.

[@evertnuman7227]

So many cats triggered - laser pointer. Just kidding. Great job, Jordan and appreciate your expert insights.

[@MunroLive]

Thanks!

[@spacecowboy2483]

The laser pointer is a very much appreciated tool to help viewers, thank you!

[@mini2nut67]

After watching virtually every Monroe video this non-engineer is actually feeling comfortable with the engineering lingo. Great job!!!

[@MunroLive]

Good to hear!

[@randyhyland847]

I would really love to watch a video comparing offensive and defensive SORB strategies. Love these super nerdy deep dives

[@mrdsn189]

THANK YOU for the laser pointer! What a great idea!

[@Czechbound]

One of these - same colour - passed me in Prague when I was walking. I caught up with it at a red light. Very, very cool looking machine. Everyone walking by was looking at it. And then it silently took off - surprisingly quick for such a big car

[@mikeg6633]

Thank you so much for the detail of your presentation. Unfortunately, suspension hasn't been discussed here as much as I'd like, but I get it, everyone is interested in the power plant. That virtual ball design has been a staple of BMW for decades.

[@legobis4484]

Great idea to use the laser pointer. Much clearer than previous videos.

[@MunroLive]

Glad it was helpful!

[@spuddy4063]

Serious geometry brought to us by the Munro Team. to explain to us in layman's terms about what makes a great driving experience real to me. The truth is that things that make a company great is when they allow their staff the ability to talk about what motivates them to work at Munro. I love it when the TEAM can be people that are approachable and trustworthy to tell me like it is, without all the fluff of a reviewer salesman working from a dealership perspective...

[@djwarren5081]

Great presentation. He certainly knows his stuff. Boffin!

[@PhotoHoag]

Thank you for laser pointer! Awesome add.

[@MunroLive]

No problem

[@treborheminway3814]

Loved my old hd1500 with Quadra Steer. Turning and towing was vastly improved. Worth the cost.

[@budgetaudiophilelife-long5461]

🤗THANKS ERIC….for including JORDAN’s dance moves 🕺😁😎And THANK YOU JORDAN…for using a pointer as an aid …and explaining tech.terms for us laypeople and we THANK ALL THE MUNRO TEAM FOR DOING WHAT YOU DO THE BEST 👏👏👏💚💚💚

[@MunroLive]

You are so welcome!

[@maxtorque2277]

The "soft" tyre aero deflector cone is necessary to meet the kerb strike test attributes. The vehicle must be capable of being parked with its nose over a standard road side kerb (typically 100 to 115mm tall) without damage. By using a soft easily deflected material this means that people can park the car over such a kerb without anything getting damaged, but that parts of the underside covering /guarding can now project down into the kerb strike area to help to minimise aero drag (and wind noise too)

[@brettspencer-curran8269]

I love that "thermal management issue" is code for "fire"

[@patreekotime4578]

Thermal runaway event!

[@maxentropy7596]

Well organized discussion

[@officialyasir]

Another banger! Thanks Jordan!!

[@MunroLive]

Appreciate it!!

[@maxtorque2277]

Two scenario's are probable to explain the post forge machining of the suspension horseshoe: 1) It was designed with a certain clearance that vehicle level kinematic testing showed to be in-sufficient, but the forge tooling was already done, hence the post machining op to increase the clearance or 2) Real world testing highlighted the need for an improved steering lock (perhaps the rear steer targets were not met) requiring front axle knuckle/upright rotation to be absolutely maximised and the machining provides the extra clearance required On my old E46 you could very occasionally actually feel the inside roadwheel go "over centre" at full lock, typically on un-even ground when the inside wheel was pushed up into the arch (towards full bump) so BMW clearly work very hard on minimising the turning radius of their products, esp the RWD ones where there is no front axle drive to complicate matters (CV joint limits)

[@evanlacava9213]

💪🏻💪🏻 good vid love when he hosts

[@bhmbill]

Well done.

[@86OEd]

Excellent narrative...

[@MrFoxRobert]

Thank you!

[@MunroLive]

You're welcome!

[@thelifeaquatica]

Jordan is a stud!

[@maxtorque2277]

The thick alluminium shear plates very firmly attached to the underside of the subframes are clearly to provide a cross axle stiffener to carry the (high) lateral loads at a sutiable level of stiffness. Yes, they act to protect the underside components, yes they act to smooth underfloor airflow, but the size and number of the fasteners that attached them to the subframe members tells us that the primary task is to shunt lateral loads across the subframe (high clamp load required to pass load without fretting). Of course these plates also massively increases torsional stiffness and reduces subframe trapeziodal deflection during offset (single sided) crash pulses as well, as the geometry of the shear plate clearly distributes any force in plane of the road surface. These plates also provide a simple way to tune the immediate off-centre response of the vehicle to handwheel inputs, particularly at the rear where the inital turn in feel / yaw rate is dominated by the lateral stiffness of the rear suspension

[@davincisghost9228]

Sweet dance moves! Awesome!

[@wongman2001]

I was really eyebrows deep into mechanical designs, thinking how knowledgeable Jordan is, then the quirky post editing 17:42 came outta nowhere! Maybe Eric could’ve added Sandy’s shades too 🤣

[@Boomtendo4tw]

That's a smooth underside!

[@maksimd6033]

Thanks for video! Please more information about technology, material of arms, balljoints, rubber bushings, subframes!!!

[@pstoppani]

Great video. That front suspension is just nuts/complex!

[@carholic-sz3qv]

Yep that why the driving dynamics comes from it’s not your average boring All the same looking tesla lol….. for your records porsche uses super old suspensions setups but seriously well tuned you can’t even understand how it works

[@celeron55]

@@carholic-sz3qv This suspension is quite similar to the ones used on Teslas.

[@carholic-sz3qv]

@@celeron55 nope it’s way better than anything tesla uses! Also tesla might be still using Mercedes’ old style suspensions lol….

[@dougk5456]

Great job of explaining all of the components and what they do. I have always looked at these items from a do-it-yourself perspective which I stopped doing in 2003. Up to that time I have always done my own repairs and the year of vehicles I worked on was late 70's or earlier. Yeah I'm old!!! I would not want to try a self repair of anything on these vehicles!! When I look at all that aluminum, I think of owning a vehicle in the 'salt belt' where they use salt in the winter. How do you think these components will hold up?

[@kp-qr6hy]

I like the idea that you used safety stands on the ramp, The number of times I see a heavy vehicle on a 2 post ramp with the tech wrestling it , I’ve only ever seen 1 jeep falling forward of the ramp . It wakens u up

[@eriklevin8447]

Good one 👍🏻✅

[@navtown]

Jordan is good!

[@mikemauck2192]

Jordan. I can hardly wait for you and your wife to do the shave commercial. Keep up the good work!

[@johnparkinson2774]

Jordan great review , check your shirt for moiré patterns. Your personality shimmers enough. Cheers from Australia

[@cesartrujillo4190]

Yes you do

[@dustypidgeon]

Eric is right! That was good

[@winniethexi2184]

I personally luv you Jordan

[@Czechbound]

Ha ha, well done *EDITOR* .. that dance moves thing was very funny

[@Slebonson]

When the IX gets better in a few years I would love to buy one.

[@Slebonson]

most IX's are around 116 to 120k after dealer mark up.

[@kkgolf5371]

@@Slebonson no dealer markup for mine. Paid 96,475 with ultimate package vent seats and sport pkg with 21" wheels

[@Enemji]

13:33 - The ambient temperature sensor has been in that location for over 20 years now across their models

[@kevinsmith7823]

A very good explanation . In lots of details . The part that you went on about honestly was slightly over my head . About cutting out a circle in the chasey would of been good to see maybe a slide show of that part in other car for comparison and then the explanation . Good a green laser pointer 👍🏽 camera 🎥 lighting 🫶🏽🙌🏾👌🏽 and in focus 👌🏽 Now think what I would love to see is photos slides of the underside of the bmw with all the aero said b4 be great to see actual maybe a show of underneath all ev’s to show who’s car looks the most aero an area that I actually love not as much as battery cell but very close and maybe a aero guy actually showing where manafactures are doing well but also showing where there is need for improvement needed I generally think around the steering areas Love to see ingeneussolutions to deflecting air round parts 🤞🏽🤞🏽🤞🏽🤞🏽🤞🏽🤞🏽🤞🏽🤞🏽 So in short a show of under body’s Maybe do a competition who ever gets the best under side name picked gets a signature of the underside signature on it thanks guys I have loads of idears

[@danapeck5382]

Great presentation of a tough topic for the liberal arts car enthusiasts (like me). Much appreciated

[@zhangallen4187]

The hole in FRT LCA, it is protected for a mass on it. You could find similar design on BMW X5&X7 2021.

[@rouchdibenkadi5541]

At 10:10 you are referring to the hole in the lower control arm and suspects it may be a carry over part from another vehicle. This hole is to mount a vibration dampener which is likely due to specific wheel size for that vehicle. For example, in the X5 and X7 with 21" and 22" wheels, these vibration dampeners are installed.

[@wires4auto]

Oooooh no you won't, sweet dance moves 🤩 it's definitely helped me learn so much more cheers !

[@MunroLive]

Rock on!

[@evolv-electric]

I hope you get a chance to review the Mada MX-30. I am sure there is a lot for Sandy and the others to comment on. Will be great content.

[@waynerussell6401]

They won't be able to talk through all the laughter. kzbin.info/www/bejne/fpjHXmWHfN-phaM

[@mauraece]

lol@ "sweet dance moves" 😂😂😂

[@richardnedbalek1968]

5:40 JORDAN: “I’d really be interested to see how this thing crashes.” SANDY (Thinking): “We can make that happen!” 😂🤣

[@ligius3]

The temperature sensor in the wheel well has been with BMW for over 20 years, at least since E39. Not the best spot for reliability, but probably a good spot for ice warning.

[@1djbecker]

The temp sensor responds very quickly in that location. And it doubles as an indication that your mother-in-law drove over a parking stop until the tire hit, and pulled off the front wheel well lining and sensor when backing out. Which happens *every time* she visits.

[@rkgsd]

17:22 Good to see my man has rhythm.

[@aurelio-reymilaorcabal9669]

@17:40 great dance moves ♥

[@EpicFail89fun]

Pretty trippy shirt you got there 👽

[@tomschuessler7723]

At 1:32, just above Jordan's head the support member looks cracked and just to the right displaced a bit. Or is it a sharpie mark?

[@keithoneil9274]

Inside tire wear on front right tire. Alignment or is this suppose to be normal? How many miles (km) on this vehicle? Great presentation.

[@Anthony__420]

I was thinking the same thing. Let’s not forget Cory was driving this😂

[@rompedientes123123]

Nice Zeeman effect

[@mathewmacoon5373]

Would love to hear your opinion on Hyliion Mr Munro. Today Hyliion anounced that they arew Aquiring fuel agnostic generator tech from GE. Their Hypertruck ERX and Hypertruck Karno must be on your radar. Comparing to Nikola this is way more promising.

[@Napster60]

Are you guys just playing with our hearts!? HAHA! F-150 TEAR DOWN WHEN? Keep up the great work!

[@MunroLive]

October

[@robcossin4690]

What about the rear side lift point? That looked like you are under the battery pack?

[@matthewk1939]

Jordan's mechanical engineering explanations would make any steering damper wet.

[@wizzyno1566]

Its all so shiny compared to being under my 14 year old Seat Exeo...

[@tarassu]

Bmw X actually means it can go some off road. So metal shields are extra cost and weight but welcomed.

[@EricP36]

Sweet Dance Moves! 🕺🤣😂

[@MunroLive]

Thanks Eric. Hahaha

[@fonkenful]

To be immortalized in a GIF

[@xxwookey]

Why does it make a difference which side of the ball the steering rack is attached? It's nominally a rigid link and always pushing on one side and pulling on the other, so moving the back or the front seem to me like they should have the same effect on the wheel? Can someone explain why this matters? (2:19)

[@MICHGO1]

THE UNDER BODY IS IT'S BEST ANGLE.

[@alanmay7929]

The interior too

[@andreandre1051]

👍👍

[@randolphtorres4172]

It would really help if you moved the suspension linkage up and down so we can see the mechanics function.

[@MasterFX2000]

Moiré!

[@jamiebel4319]

Perhaps the sway bar is linked to the control arm on a lesser contented model (non airsprung suspension)??

[@ptz0n]

Bolts already corroded. How do we like that?

[@maxtorque2277]

BMW pretty much never connect antiroll elements via the lateral links for two very good reasons: 1) You get approx half the displacement of the knuckle/upright at a point approx halfway along the lateral link. This means your Antiroll elements need twice the effective stiffness, and that puts twice the load and frictional losses into the system 2) Putting vertical loading into the lateral links really complicates the K&C bushing, and adds a large non lateral displacement to those bushes which changes the dynamic kinematics of the suspension Less premium cars with lower R&H targets do this (connect ARBs to lateral links) to save costs at the penalty of less optimum dynamics......

[@Wised1000]

If that is rear wheel steer it must be the shortest range of motion I have ever seen, furthermore, it seems to be connected to the suspension arm rather than to a steering knuckle. Correct me if I'm wrong but that looks more like an active toe/camber control device. Go back to your EQS video and the difference is obvious. I would doubt if the steering angle allowed is more than a few degrees. On the EQS its a full 10 degrees.

[@carholic-sz3qv]

It doesn’t need to be two digits lol…… at higher speeds it’s super responsive

[@Wised1000]

@@carholic-sz3qv Im sure it handles well, its a Bimmer! The question is if it qualifies as "rear wheel steering" or not.

[@terrysullivan1992]

I think Jordan saying "it's the first and last time I'll ever hear that" (17:50 ) about the camera guys dance moves comment is what prompted the edit of those moves with music (17:38). If you're not the producer or director; be careful what you say.

[@ErikvonStahl]

Bad shirt choice for video. Distracting aliasing effect on multiple platforms. Otherwise educational and informative. I am enjoying the Munro channel a lot these days.

[@AF-lv1ev]

Can you replace your green laser pointer with a red one please. Red stands out more, and green is difficult to see.

[@tschuuuls486]

@MunroLive Have you seen Bjørn Nylands video on the i4, where the battery and cabin share the air conditioning and cause overheating, if you fast charge and use the ac at the same time?

[@ramdynebix]

Scoor ding to Björn’s last comments BMW suspects there’s a problem with that very new car. Other i4 drivers also mention having no issues during trips in hotter weather

[@tvanbroekhoven]

@@ramdynebix Yes, I was one of them. 40+ degrees celsius in France with fast charging and +130 kmph driving - no worries.

[@Firestorm637]

LG Chem battery pack?

[@jamesge8087]

BMW's first 8 Series had rear-wheel steering too, curious why this is only finding "mass" adoption now/almost 30 years later

[@darylclifford]

I CAME FOR THE DANCE MOVES !!

[@MunroLive]

🕺🕺🕺

[@V10PDTDI]

boy make sure sandy is not around when this guy does a video of the underside of any car he know his stuff and very well spoken. he did not mentioned that BMW made a mistake by making the rear or front control arm not strait most European cars have curved control arms I'm talking about the vw ID4 under the car video.

[@MrSnicol]

Can you kindly rip this to peace’s please, we don’t need to know how it’s made. Thanks.

[@sudhaapna1100]

Have your checkbook and savings ready when the warranty expires

[@joshualewis3337]

So on and so forth

[@bndry]

Jordan is best presenter in terms is speaking clarity and concept breakdown. It is quite hard to listen to Sandy at times, and some other crew members too.

[@InternetDude]

Yeah this channel would be better if Sandy never appeared in a future video.

[@tarassu]

Pros and cons everywhere. I like different ways

[@Johnny2Feathers]

it’s not hard at all for me to listen to Sandy or other crew members.

[@durante84]

Your analysis of BMW's engineering is insightful, but I respectfully disagree on one point. While not machining out the hole in the carryover control arm can save costs, it can increase delivery and repair costs as a new part needs cataloging, separate procurement, and global stocking. Part crossover between models benefits both customers and the supply chain.

[@gelisob]

2:51 talking about front steering without mentioning that you did not mean front wheel steering, will cause confusion :)

[@jamesengland7461]

True! For those wondering, front steer in this case means the steering linkage is at the front part of the suspension, in front of the "axle line," where rear steer simply means the steering linkage mounts on the rear side of the (front) suspension.

[@mark.m2163]

There’s nothing that looks disposable, this car definitely looks like it’s built to last .

[@alanmay7929]

Exactly unlike the tesla where if something gets broken in an accident it’s going to cost arms to repair

[@0cer0]

@@alanmay7929 From a technical point of view, I see no reasonable grounds for your statement.

[@MAESTROLIDER]

9:04 is there rust on the front suspension bolts?))