[jhb]

I bought my X with the 755m 22" wheels. When I bought the option, does that change the rear suspension, or is it just the wheels? I thought it was just the wheels.

Can I buy 2 22" front size tires and install on rear to square up or are the offsets different?

Can anyone confirm if the SV-F4 in 20x9 or 20x9.5 will fit all around? What snow tires would you put on them?

One last question, if I have 2 rims in the same size, and 1 has 30 offset and other has 25, will the 25 offset look more concave than the 30, or is it just a function of wheel centerline?

[fynride1]

Originally Posted by jvm

Were your roads plowed? Just drove mine with PZeros in the Colorado mountains with snow and stopping is *definitely* a problem if it’s not well plowed. I’m now looking into options for winter tires as well.

I assume nobody has tried chains on the pzeros?

Not plowed at all. Again, only 3 or 4 inches at most. Really not sure what to do.

[jmciver]

Originally Posted by x7bmw23

I was awaiting approval from the administrator on this site before I could post. I was in the process of building my X7 due for delivery 1/15/21. I built it with 21" wheels but then after reading your post, I tried to change to the 758i wheel to run it all year round with your mentioned winter set up. Unfortunately I was too late and they had already started production and I couldn't change the wheels 😩

Then my dealer tried to work with me on finding a different set of 22" wheels and give me a price break on tires. I only wanted the 768i oem wheels and it was too late and I wasn't going to pay $6500 from eBay.

He then told me that those summer 22" tires on the 758i last about 7000 miles. He said he has customers complaining about it all the time. He also told me that the run flat tires are designed to not necessarily have the bead broken too many times because of how the tire is made. He had me convinced at that point to stick with the 21" wheels so that I didn't go through tires every 7000 miles and spend $2500 on a set of staggered run flats because I don't have spare set up.

All in all, I still like your set up better and wish I could have chatted with you before I submitted my build to get a better understanding of the long term effects of your set up.

How long a tire lasts is heavily dependent on the driver, regardless of the type of tire. Case and point, I got over 35k miles on my original Michelin Pilot Super Sport tires on my M3, while others burned through them in under 10k miles (and I still had "fun" driving my M3). But I would never drive on a tire like that in any type of snow/slush unless it was an absolute emergency without another choice - been there, done that during my "ignorant youth" early performance car ownership days.

FWIW, driving on the 21" A/S that came with my X7 for the first time in the winter storm that is hitting the NE right now, they performed well. Not as well as dedicated snow tires, but as long as you understand the basic laws of physics when driving in snowy conditions (which is to slow down), you will be just fine.

[aas5]

Tirerack has a dedicated winter set for X7 with 22 tires staggered from Pirelli. I bought it a couple of months ago and used it for the first time this week. They were great.

[Next Level Auto Brokers]

Originally Posted by Art-CK

Thanks! I got a set of 285/45R22 Blizzaks for the car. Putting those on next week on oem 755M rims. Will post pics.

Just picked up my m50 with 22"s

Thinking of using the same setup for all seasons or winters
Any issues with the 285s? You went with these over the 275s?

Do they looked stretched on the wider rears? Pics?

Thanks!

[justbrm]

I have the same 22' configuration from Pirelli. It had a vibration issue when it drove over 100km/h. My dealer has re-mounted it up with a better machine, then the vibration went away.
So far, I am happy with the 22' though obviously, it feels different than the summer one.

[Next Level Auto Brokers]

Originally Posted by justbrm

I have the same 22' configuration from Pirelli. It had a vibration issue when it drove over 100km/h. My dealer has re-mounted it up with a better machine, then the vibration went away.
So far, I am happy with the 22' though obviously, it feels different than the summer one.

what setup did u go with?
285/45R22 ?

[m-prsev]

For anyone running 285/45R22 all around can you please post pics, especially comparing the front and rear? Any issues given the 4.69% diameter variance?

Has anyone considered running 305/40R22 Nitto Terra Grapplers?

[ImolaRay]

I don't drive my M50i in the winter/snow below about 35 degrees, due to the tires and salt. But having the tire temperature display in the iDrive got me thinking about actual tire temperature vs air/road surface temps.
While driving in 35 degree air temps, the tire TPMS displays a temperature of around 65 degrees after a few minutes. Obviously this is the internal air temp of the tire. But with this increase in air temp (due to tire carcass movement) and friction between the tire and the road (not sure what that's called - slip?), there will be an increase in actual tire tread temps to somewhere between road temps and internal tire temps. So... in terms of temperature, can we use the summer tires in lower temps given the actual tire temp is higher that external/road temps.
The linked video is something I've watched before, but it does not take into account actual tire temps, given the driving is minimal and does not allow for tire temps to build up as in normal driving.

[jmciver]

Originally Posted by ImolaRay

I don't drive my M50i in the winter/snow below about 35 degrees, due to the tires and salt. But having the tire temperature display in the iDrive got me thinking about actual tire temperature vs air/road surface temps.
While driving in 35 degree air temps, the tire TPMS displays a temperature of around 65 degrees after a few minutes. Obviously this is the internal air temp of the tire. But with this increase in air temp (due to tire carcass movement) and friction between the tire and the road (not sure what that's called - slip?), there will be an increase in actual tire tread temps to somewhere between road temps and internal tire temps. So... in terms of temperature, can we use the summer tires in lower temps given the actual tire temp is higher that external/road temps.
The linked video is something I've watched before, but it does not take into account actual tire temps, given the driving is minimal and does not allow for tire temps to build up as in normal driving.

In a simple word - No. The temps used to determine when to use/not use summer tires are based on air temp to keep it simple for the average consumer. As it has been said before, driving on summer tires in temps below 40 deg F is not advised (some will say below 45 deg F). Driving in sub freezing temps (32 deg F and below) is straight up dangerous as you will have no traction when dry and even less when wet/slush/snow. And can cause damage to the tires (i.e. the rubber can literally crack, weakening the integrity of the tire).

People really need to stop trying to find a loophole here to try to justify using summer tires in winter/cold conditions - because there isn't one. The laws of physics regarding the rubber compounds in summer tires and cold air temps below 40 deg F can't be broken. You can try, but sooner or later physics will win.

[ImolaRay]

Originally Posted by jmciver

People really need to stop trying to find a loophole here to try to justify using summer tires in winter/cold conditions - because there isn't one. The laws of physics regarding the rubber compounds in summer tires and cold air temps below 40 deg F can't be broken. You can try, but sooner or later physics will win.

Not trying to bend the rules of Physics or find a "loophole". As I said, I don't drive the car in cold temps or any snow.
I'm just am looking at it from a problem solving POV. As an example, F1 tires reach temperatures 2 times that of the track surface. They are most concerned about tire temps, more than track or air temps (hence the tire warmers). Or course that's an extreme example, but it may also apply to our driving to a lesser extent. Even when they race in colder temps (relatively) you can see steam coming off the tires when they get wet.
Also, is the law of 40 degrees referring to Air temp, Road temp or the Rubber temp? Or does the "law" assume both are equal?
Just trying to understand the temperature thing more completely.

[jmciver]

Originally Posted by ImolaRay

Not trying to bend the rules of Physics or find a "loophole". As I said, I don't drive the car in cold temps or any snow.
I'm just am looking at it from a problem solving POV. As an example, F1 tires reach temperatures 2 times that of the track surface. They are most concerned about tire temps, more than track or air temps (hence the tire warmers). Or course that's an extreme example, but it may also apply to our driving to a lesser extent. Even when they race in colder temps (relatively) you can see steam coming off the tires when they get wet.
Also, is the law of 40 degrees referring to Air temp, Road temp or the Rubber temp? Or does the "law" assume both are equal?
Just trying to understand the temperature thing more completely.

Air Temp - as I mentioned at the beginning of my response above....

[ImolaRay]

Originally Posted by jmciver

Air Temp - as I mentioned at the beginning of my response above....

That is correct for the "average consumer, but does to provide more specific impact of road/tire/air temps on the rubber.

So... never-mind.😊 I think its just to complicated.

[Saejin]

Something to think about as I was researching tinting my front windshield.

If you get in an accident in the winter with snow on the ground and you're running summer specific tires, I'm sure there are plenty of lawyers and victims who would love to sue you for negligence. I hear the commercials everyday...been in an accident, call Frank Azar and get what you deserve!

To top it off, you're driving a $100K luxury vehicle and can't afford winter or all season tires. Lawyers will eat that up. Also, here in Colorado we have a winter traction and chain tire law, so that just adds more nails to the coffin.

If you choose to run summers in the winter, just make sure you up your insurance levels and maybe get an umbrella policy as well.

[Frankmelton]

Hello there! I am new to the thread, although I have read almost every single posted information on BMW X7. I have been researching and learning about the BMW X7 for over a year now. I finally made up my mind and made my order.

I just received my BMW X7 in black. During the ordering process, I was unable to get an original set of complete black rims (Trying to replicate the DARK SHADOW look). I have researched for long and finally got a solution. I would like to know if anyone tried it before.
I have decided to get the 742M black rims (Originally for the BMW X6M). The only issue I see is this:
Original 22 inch rims for BMW X7 has
VA: 9,5J x 22" ET 32 mm
HA: 10,5J x 22" ET 43 mm

While the 742M designed for the BMW X6M has
VA: 9,5J x 22" ET 37 mm (+5mm)
HA: 10,5J x 22" ET 43 mm

I am looking at having the wheels staggered:
275/40/22 Front
315/35/22 Rear
Pirelli Zero

I currently have 285/45/21 All weather for both front and back.

From what I have read, the +5mm shouldn't be an issue. Has anyone tried these and has pictures?

[Chunner]

Has anyone tried mounting BF Goodrich KO2s on say a dedicated 19 or 20 inch rim set up? Pics? Phenomenal all terrain/snow tires with a real aggressive looking tread.

[cmbrez]

Originally Posted by yvnrg1981

Yes, My brothers x7 we did 275/45/22 all around, no issues.

I am looking for an all season option for my wife's X7 with 22's. We have the summer performance tire that came stock, but I will need to get them off in November. Cant find a staggered all season set in the stock sizes. I was thinking instead of 275/40 or 285/40 all around (which I have seen that people here have done) that I would keep the 275/40 up front (like it came with) and put 285/40's in the back. Same virtual height and that would give me some sort of stagger.

Anyone else have anything they are doing for all season tire options?

[aas5]

Originally Posted by cmbrez

I am looking for an all season option for my wife's X7 with 22's. We have the summer performance tire that came stock, but I will need to get them off in November. Cant find a staggered all season set in the stock sizes. I was thinking instead of 275/40 or 285/40 all around (which I have seen that people here have done) that I would keep the 275/40 up front (like it came with) and put 285/40's in the back. Same virtual height and that would give me some sort of stagger.

Anyone else have anything they are doing for all season tire options?

You can get winter tires staggered that fit the OEM wheels and swap them twice a year

[BMWBear]

Discussing winter wheels in May should be illegal and banable.

[bradythedog12]

Originally Posted by BYEIL

Discussing winter wheels in May should be illegal and banable.

Although with all the stocking issues lately, it may now be appropriate. lol

[Buppies]

Ours came in and just put on 22s BMW size pacific so far so good original lasted 18000 non hard driving

[iconoclast]

Originally Posted by bradythedog12

Although with all the stocking issues lately, it may now be appropriate. lol

Anticipate a tire shortage come Autumn. Either fabricated or genuine. IMO.

I have a set of like new OEM BMW 747M with Pirelli winter tires. Approximately 1800 miles on them. Only selling as a set. Contact if interested.