[jad03060]

Make sure your tire pressure is set to the factory recommended pressure based on the tire's current temperature (i.e., what it says in iDrive, not the door panel) for best results.

[Anders R]

On my M50i with air suspension I noticed the rumbling on 22” Continentals non RFT immediately at speeds over 100 kph. As I didn’t have this with my 21” winter set, I finally decided to swap the 742M 22”s for a set of 741M with Pirelli RFT.

Result: rumbling gone (I also have acoustic glass) and the ride comfort is about the same. Bonus is that I actually prefer the design of the 741M over the 742M.

[jaxdtw2196]

I've had really good luck with my Pirelli PZ4's over the last year and a half... nice and quiet the entire time (21 inch setup)... but due to the cost of replacing these tires I am thinking of going to a squared 20 inch setup... What is a reasonable price to pay for a set of 740M wheels?

[swainbmw]

Originally Posted by atl_1M

Dropped the car off today, and was able to give a ride to the shop foreman so he could hear the sound. He seemed to agree that the sound was abnormally loud, but said he will try and drive another car with the same specs and tires noise is consistent.

I"m almost certain the sound is due to tire acoustics. I received a loaner with stock 21" wheels on Pirelli Pzero run-flats and while there is a very similar sound, it is probably 1/3 to 1/2 of what I'm hearing and certainly bearable. So my non-run flat 22" tires (Conti PremiumContact6) with lower profile tires is 2 to 3x louder than the 21" run flats. Just doesn't seem right.

Are there other factory tire options for the 22" wheels that I could ask for? Not sure what they're going to come back with, but I'm betting they say the sound is normal.

22 are much loader plus from your video I’m hearing the tire against the expansion joints totally normal

[atl_1M]

Originally Posted by swainbmw

22 are much loader plus from your video I’m hearing the tire against the expansion joints totally normal

This is an old thread but please read the top of my first post for the resolution. The sound was definitely not normal. BMW forgot to install the dampeners and that was causing the sound. That fixed my problem. Crazy that the techs and even regional engineer couldn’t figure it out when I was able to determine I was missing it just by looking at the parts diagram online.

[swainbmw]

Originally Posted by atl_1M

This is an old thread but please read the top of my first post for the resolution. The sound was definitely not normal. BMW forgot to install the dampeners and that was causing the sound. That fixed my problem. Crazy that the techs and even regional engineer couldn’t figure it out when I was able to determine I was missing it just by looking at the parts diagram online.

Mine does this also and it’s a 2022 maybe there also missing

[atl_1M]

Originally Posted by swainbmw

Mine does this also and it’s a 2022 maybe there also missing

Look under your car and make sure you have part 13 in the diagram below. Mine was missing but my build is way back in Jan 2020
https://www.realoem.com/bmw/enUS/sho...diagId=31_1503

[swainbmw]

Originally Posted by atl_1M

Look under your car and make sure you have part 13 in the diagram below. Mine was missing but my build is way back in Jan 2020
https://www.realoem.com/bmw/enUS/showparts?id=CR63-USA-12-2019-G05-BMW-X5_40iX&diagId=31_1503

I put it in storage over the winter and I’ve not had it out since last November I’m going to have to get it out and drive it and see if there’s parts are missing