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BMW M8 Forum and 8 Series Forum BMW M8 and 8-Series General Discussion BMW M8 Gran coupe winter rims / tires - Need help

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      03-17-2020, 10:45 AM   #1
Dex85
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BMW M8 Gran coupe winter rims / tires - Need help

Hey all,

So I am looking for suggestions and advice in regards to winter tires and rims. This is the summer tire setup:

20" Rims with BMW 811M (Tires Front 275/25 | Rear 285/35)

OR

20" Rims with BMW 813M (Tires Front 275/25 | Rear 285/35)

These are the launching variations for the M8 Competition Gran Coupe.

My first question is, should I go for 19" or 20" rims for the Winter tire setup? Pros / Cons?

Second question is, what rims and winter tire sizes are available for the M8 Gran Coupe??

The dealer I have ordered with is unsure of what rims should be available and preferred for winter tires on the m8 gran coupe…
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      03-17-2020, 11:31 AM   #2
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Quote:
Originally Posted by Dex85 View Post
Hey all,

So I am looking for suggestions and advice in regards to winter tires and rims. This is the summer tire setup:

20" Rims with BMW 811M (Tires Front 275/25 | Rear 285/35)

OR

20" Rims with BMW 813M (Tires Front 275/25 | Rear 285/35)

These are the launching variations for the M8 Competition Gran Coupe.

My first question is, should I go for 19" or 20" rims for the Winter tire setup? Pros / Cons?

Second question is, what rims and winter tire sizes are available for the M8 Gran Coupe??

The dealer I have ordered with is unsure of what rims should be available and preferred for winter tires on the m8 gran coupe…
This doesn't look right for the fronts. Should be 275/35 & 285/35 for the rears.

We have Pirelli Sottozero 2's/staggered own the stock rims and plan to keep the snows on them as our 813M wheels are a pain in the ass to clean.
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      03-18-2020, 05:22 AM   #3
Dex85
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Thats probably a typo from the dealer. Youre probably right it should be 275/35 and 285/35.

What rims are stock on the m8 comp gran coupe?

And would you suggest 19" or 20" and why? One dealership suggested 19" for winter setup (more safe he said??). What size should the winter tire be? What is your suggestion? (Or, what do you have on your Pirellis?)
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      03-18-2020, 10:55 AM   #4
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Quote:
Originally Posted by Dex85 View Post
Thats probably a typo from the dealer. Youre probably right it should be 275/35 and 285/35.

What rims are stock on the m8 comp gran coupe?

And would you suggest 19" or 20" and why? One dealership suggested 19" for winter setup (more safe he said??). What size should the winter tire be? What is your suggestion? (Or, what do you have on your Pirellis?)
Everyone I know went with those P. sortoZero tires. I don't know if they are good or bad, but they are winter run flats.

I know most people go down a size for comfort. The 19s are more comfortable than the 20 or 21, from what I hear. That said I think most winter tires are in even sizes, 18 and 20; but I don't know.

I looked into winter tyres but decided that I'd just go with all seasons if I needed, as we don't get too much snow.
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      03-18-2020, 11:07 AM   #5
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Quote:
Originally Posted by Resjudicata View Post
Everyone I know went with those P. sortoZero tires. I don't know if they are good or bad, but they are winter run flats.

I know most people go down a size for comfort. The 19s are more comfortable than the 20 or 21, from what I hear. That said I think most winter tires are in even sizes, 18 and 20; but I don't know.

I looked into winter tyres but decided that I'd just go with all seasons if I needed, as we don't get too much snow.
The tires have been decent and the car drives great in snow. They are as comfortable as the PS4s. There are not run flats, just conventional tires but I believe there are run flat options.

I can see 19" for snows; think Noushy has a 19" winter set but don't think that 18" would clear the brakes.
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      03-18-2020, 11:10 AM   #6
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Quote:
Originally Posted by Dex85 View Post
Thats probably a typo from the dealer. Youre probably right it should be 275/35 and 285/35.

What rims are stock on the m8 comp gran coupe?

And would you suggest 19" or 20" and why? One dealership suggested 19" for winter setup (more safe he said??). What size should the winter tire be? What is your suggestion? (Or, what do you have on your Pirellis?)
813M wheels. Unique to the M8 Comp. There is no difference in safety with 19" vs 20" or square vs. staggered.
Staggered used to be an oddball but with staggered rims it becomes a rim saver.
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      03-18-2020, 01:43 PM   #7
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here is a good snow article:

https://www.liveabout.com/why-downsi...wheels-3234481
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      03-18-2020, 03:02 PM   #8
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Quote:
Originally Posted by Resjudicata View Post
Thanks for the article!
I will take issue with a couple of their assertions though. One, a smaller rim doesn't provide more profile.
Aquaplaning and ice are secondary IMO. Apart from studded tires there is little one can do in terms of traction and narrow/wide tires will perform equally poorly. As for aquaplaning, that issue would occur with any tire on the M8 and is not really a snow issue (or winter issue here).

He is correct on narrow tires; skinnier tires cut better through snow. But again, nobody would use a 225 or less tire on this car.

We normally have snow on the ground five/six months a year.

The reason I usually don't bother with a lesser wheel set and pay for mounting/unmounting twice a year is that long duration.

Snows are on the car almost half the time. At least I want the car to look it's best whenever we drive it.

The reality is that the modern torque vectoring AWD system is so good that the car drives exceptionally well in the snow.
Have respect for required brake distance, don't drive like an idiot and don't drive that car in a 20" snow storm and you will be fine with any snow tire and to some extend even All-Seasons.

There is a reason why most cars in the ditch here are 4WD SUV's or pickup trucks
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      03-18-2020, 08:12 PM   #9
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here is the snow tires. I almost bought them for my m850i; but decided to stay with stock tires for now and go all seasons when the tread is up.

https://m.tirerack.com/tires/tires.j...=Runflat+Tires
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      03-19-2020, 04:05 AM   #10
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Thanks guys, very informative !

I found this link https://www.bavariabmw.ca/winter-tire-package/

and specifically this screenshot (Sorry for big image sizes, new here and not sure how to downsize):

Name:  m8 winter tires.jpg
Views: 1151
Size:  286.6 KB

Im just not sure I like the 727M Orbit Grey rim. There has to be other options?

Quote:
813M wheels. Unique to the M8 Comp. There is no difference in safety with 19" vs 20" or square vs. staggered.
Staggered used to be an oddball but with staggered rims it becomes a rim saver.
Also out of curiousity, 813M or 811M? What do you think looks best? I thought both were exclusive to the M8 ?

For reference:

20" 813M rims
Name:  M8 20 inch 813M rims.jpg
Views: 1176
Size:  203.0 KB

20" 811M rims
Name:  M8 20 inch 811M rims.jpg
Views: 1268
Size:  211.2 KB
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      03-19-2020, 11:53 AM   #11
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Quote:
Originally Posted by Resjudicata View Post
here is the snow tires. I almost bought them for my m850i; but decided to stay with stock tires for now and go all seasons when the tread is up.

https://m.tirerack.com/tires/tires.j...=Runflat+Tires
Just FYI. Even though your searched for run flat snows, these are not run flats.
They are not available for the M850, only the Sottozero 3 which I like better but are not available for the M8...
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      03-19-2020, 12:10 PM   #12
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Quote:
Originally Posted by Dex85 View Post
Also out of curiousity, 813M or 811M? What do you think looks best? I thought both were exclusive to the M8 ?

For reference:

20" 813M rims
Attachment 2262902

20" 811M rims
Attachment 2262903
The rims are unique to the M8 and both tires and rims are wider than the M850
9 1/2"F & 10 1/2"R w. 275/285 tires for the M8 vs 8"F & 9"R w. 245/275 tires
Offsets are different too.


That said, I am not crazy about either rim. I think the 813M is a bit nicer looking for the M8 but the 811M much easier to clean with larger openings.
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      03-19-2020, 01:59 PM   #13
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Having used Sottozero Series II tires in the past, I can say these tires performed very well in practically all winter driving conditions.
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      03-25-2020, 04:08 AM   #14
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The question is still, are there other good 19" rim options with good fitting winter tires for the M8 other than the ones mentioned above ?
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