[gregtennis91]

I'm not sure what to do and whether its the car or the fact I didn't get the car with adaptive. I test drove the m40 about 2 times prior to getting it and never felt this. It is like the suspension is soooo stiff that if at slow speeds there are bumps in the road it is jarring. I'm 1k miles in. My 2016 328 msport was smoother over the bumps than this. Any advice would be appreciated. That is literally my only gripe about the car. The handling, acceleration, and tech are all top notch.

thanks in advance.

[chicagofan00]

Originally Posted by gregtennis91

I'm not sure what to do and whether its the car or the fact I didn't get the car with adaptive. I test drove the m40 about 2 times prior to getting it and never felt this. It is like the suspension is soooo stiff that if at slow speeds there are bumps in the road it is jarring. I'm 1k miles in. My 2016 328 msport was smoother over the bumps than this. Any advice would be appreciated. That is literally my only gripe about the car. The handling, acceleration, and tech are all top notch.

thanks in advance.

Are the tires at the correct pressure? What size wheels did you get? RFTs will be the biggest culprit more than likely so you could swap them out. Did you test drive with or without the adaptive suspension?

Personally, I have the 21's with RFTs and the standard suspension and have no complaints at all about the ride quality, bumps, etc.

[gregtennis91]

19's and RFT's. test drove with standard as well. Perhaps checking pressure is the next step.

[chicagofan00]

Originally Posted by gregtennis91

19's and RFT's. test drove with standard as well. Perhaps checking pressure is the next step.

I haven't read of too many others having complaints on the 19" setups with or w/o adaptive. I'd definitely check the pressures just to be sure.

If still not happy with the ride the next step would probably be to swap to non-RFTs but that is a bit costly of an option with only 1k on the current setup.

[m235hou]

Originally Posted by gregtennis91

19's and RFT's. test drove with standard as well. Perhaps checking pressure is the next step.

I don't have adaptive and thought the same when I first got it. Then I checked my tire pressure and the iDrive was set to "over 100mph" setting which meant too high of a pressure.

Redid the wheel and tire setting within the iDrive, took some air out of the tires to match the new recommended pressure, and was much better.

[Crassus]

Brand new cars usually run too high pressure. Bring it down and the ride will improve. Worst case, get non run flats.

[Slashers 28th/61st]

Possibly not the case 'gregtennis91' ....but sometimes the dealership on pdi forget to remove the transport packaging form the suspension...just another thing to check if no improvement from the above suggestions......just a thought

[JustChris]

Are the shipping blocks still in?

[MechX3M40i]

It's not surprising about the being bumpy in NYC In any event, there are quite a few NYC forum members here and some of them even got the 21" wheels but as far as I know they had not complained about excessively rough ride.

Besides checking tire pressure as many other had suggested, maybe it's just the characteristics of the X3M40i. It's a SUV and is much heavier than your 328. It also got bigger wheels and possibly stiffer suspension too. And yeah, run flats do not help either...

[gregtennis91]

Thanks. I checked the tire pressure and the shipping blocks.

Looks like no shipping blocks, but will double check when i get service done since its not that easy to tell in the rear.

tire pressure is 3PSI higher than recommended on the front of the car. Idrive settings all good.

[tastes jigga]

Just switched from a 20" winter non-RFT square setup to my 21" RFT staggered setup and was caught off guard by how different the ride feels. That being said, I actually prefer the ride with the 21's despite the increased harshness.

If you want a super comfortable ride, get the 30i or a X5 with the air suspension.

[Max Well]

Originally Posted by gregtennis91

I'm not sure what to do and whether its the car or the fact I didn't get the car with adaptive. I test drove the m40 about 2 times prior to getting it and never felt this. It is like the suspension is soooo stiff that if at slow speeds there are bumps in the road it is jarring. I'm 1k miles in. My 2016 328 msport was smoother over the bumps than this. Any advice would be appreciated. ...

As we own 2018 and 2019 G01 X3 M40i models with 19" performance RFTs (Yokohama on '18 and Bridgestone on '19), can state that hasn't been an issue for us. And the '19 has Adaptive - my wife indicates she can tell it is more comfortable than the '18, but I honestly can't tell any difference...

Although tire pressure will definitely change the ride, I always modify the pressures when going on higher speed Interstate travels (from the rec PSI to 36/40 and even 38/42 - see https://x3.xbimmers.com/forums/showthread.php?t=1440682 ) and haven't noticed the 'jarring' you suggest. Understandably a harder tire is going to 'feel' the bumps more, but shouldn't be jarring.

Would respectfully suggest it may be worth a scheduled Svc visit with someone you trust at your Dealer and let them ride with you. And even better if they have another one on the lot you can check out at the same time. Wouldn't matter if the comparison vehicle has the 20" or 21" as they should, if anything, produce a more noticeable issue you describe so shouldn't slant the evaluation the other way.

[rem40i]

My m40i is in the shop for a recall and warranty work for a bubble in my right front tire. The loaner they gave me is a 2018 530i on 18" (245/45R18) run flat tires no adaptive suspension. The ride is night and day compared to my m40i on 21s with Alenzas and Adaptive. I honestly cant feel a difference when im driving my car on adaptive vs not. Even driving the 530 in sport is a lot more comfortable than the m40. If I could do it all over again I would get the smaller wheel/tires.

[Dr.Mark]

I'm coming from an M3 E92, but this X3 is plush compared to that car. Soooooo comfortable in comparison. Take that for what it is worth.

[Crassus]

Originally Posted by rem40i

My m40i is in the shop for a recall and warranty work for a bubble in my right front tire. The loaner they gave me is a 2018 530i on 18" (245/45R18) run flat tires no adaptive suspension. The ride is night and day compared to my m40i on 21s with Alenzas and Adaptive. I honestly cant feel a difference when im driving my car on adaptive vs not. Even driving the 530 in sport is a lot more comfortable than the m40. If I could do it all over again I would get the smaller wheel/tires.

It sounds like you need non-runflats. I got some on my car in December but wish I did it from day one. The ride now is perferct. Firm buy non jarring or busy.

[IM_ALL_IN]

Originally Posted by tastes jigga

Just switched from a 20" winter non-RFT square setup to my 21" RFT staggered setup and was caught off guard by how different the ride feels. That being said, I actually prefer the ride with the 21's despite the increased harshness.

If you want a super comfortable ride, get the 30i or a X5 with the air suspension.

I'm gearing up for that shock. Had scorpions on for winter and the ride has been nice, definitely recommend those on 20's. The alenza RF, from what I can remember, were much stiffer and less forgiving. I might change them out this week.

[gregtennis91]

Well went to UDE today and tried the x4 3.0, x5 4.0, 330, z4, and x3m40.

My car was the bumpiest and I had two other people, wife included try the car out. I mean it’s not as smooth as an m240 so something is up. Tire pressure has been addressed. Calling for service tomorrow. Tried to look for shipping blocks but don’t see anything.

[tastes jigga]

Originally Posted by IM_ALL_IN

I'm gearing up for that shock. Had scorpions on for winter and the ride has been nice, definitely recommend those on 20's. The alenza RF, from what I can remember, were much stiffer and less forgiving. I might change them out this week.

After driving with the 21's for a few days now I can tell you the ride is much better! It feels much more planted and "riding on rails", plus it handles much better. The square 20's non-RFT made it feel like a soft SUV.

I actually prefer the slightly more uncomfortable ride of the 21's. Taking turns I feel like I'm in my M4 ZCP again! (exaggerating slightly)

[Tex94]

I’m so glad the OP asked this question and for the great replays. I’ve never been thrilled with how the car reacts to bumps and potholes but always chalked it up to the RFTs. After reading the replies though I checked my tire settings in iDrive and discovered that my 20” tires were listed as “other” and were set to speeds over 100mph. After adjusting to the correct tire size and recalibrating the tires there is a very noticeable difference. Very nice!

[Jcrane]

Originally Posted by Tex94

I'm so glad the OP asked this question and for the great replays. I've never been thrilled with how the car reacts to bumps and potholes but always chalked it up to the RFTs. After reading the replies though I checked my tire settings in iDrive and discovered that my 20" tires were listed as "other" and were set to speeds over 100mph. After adjusting to the correct tire size and recalibrating the tires there is a very noticeable difference. Very nice!

Hi mate, I too think the same about the bumpiness of the M40i. where About's do you set the tyre size in idrive? I'm in Australia riding on the 21's but can't seem find that setting

[Tex94]

Originally Posted by Jcrane

Hi mate, I too think the same about the bumpiness of the M40i. where About's do you set the tyre size in idrive? I'm in Australia riding on the 21's but can't seem find that setting

It’s listed in the Vehicle Settings under Vehicle Status.

[snakehips]

Originally Posted by Tex94

I’m so glad the OP asked this question and for the great replays. I’ve never been thrilled with how the car reacts to bumps and potholes but always chalked it up to the RFTs. After reading the replies though I checked my tire settings in iDrive and discovered that my 20” tires were listed as “other” and were set to speeds over 100mph. After adjusting to the correct tire size and recalibrating the tires there is a very noticeable difference. Very nice!

Same here! I just had my summer tyres put on and thought the ride was particularly bumpy and jittery, not what I remembered from the few weeks I had them on before the swap to winters. The tyre type had been left on “other” fully loaded and the pressures set accordingly. After I set it to my 20” tyres the required pressure dropped 4 psi and after letting air out the ride has improved immeasurably. Thanks to those who gave this tip.