[///AVM]

Originally Posted by VisualEcho

To the realization that your car might be just a bit different than the norm, either with alignment, or something else.

BigKutta

Per Visual . . . did you get your car aligned after placing new wheels/tires?

Not sure if alignment would explain your problem, but I know it is important in general.

///AVM

[Artemis]

Originally Posted by ///AVM

Kutta
Sorry if I was vague, but my prior post was with reference to the tire sizes in general, whether winter or summer.
I forget the details at the moment, but recall Visual convinced me not to deviate from stock tire sizes. If you recall, not long ago we were talking about how the M2C was 'under tired,' and discussed wider tires as the solution. This was about the same time I was thinking of staying in Michigan and looking into winter wheel/tire setup.
At any rate, do not mean to belabor the point, other than to say deviating from stock tire sizes is not as simple a matter as I originally thought. . . do not mean to suggest deviating is the end of the world either.
///AVM

You are referring to this discussion and, yes, we agreed to disagree: see here and here.

I am used to 255/275 for my summer tires (PS4S): zero issues, excellent grip and no regrets. I know that VisualEcho is vocal about sticking to 245/265, but to each his own.

For winter tires (Pirelli Sottozero, Michelin Pilot Alpin, etc.) 255/275 is IMHO too much.

[///AVM]

Originally Posted by Poochie

My humble advice is when you're replacing those winter tires, go with all four 245s, square; that way you can rotate and stretch them out, not to mention guaranteed no clearance issues.

Wider winter rubber are unnecessary IMHO, since their inherent softer rubber compound don't make for ultimate BMW handling potential anyways, so your performance will be compromise, regardless of the tire girth.

Save the playtime drifting and such for when the summers go back on.

Poochie

Everything you state, as usual, makes perfect sense . . . I THINK brother Kutta simply does not want to give up the aesthetic by going to less wide/square tire setup.

///AVM

[VisualEcho]

Originally Posted by Poochie

My humble advice is when you're replacing those winter tires, go with all four 245s, square;

I always assumed that the car needed the .5" rake front to back to not mess with the ABS and TC. Good to hear that it doesn't.

[Artemis]

Originally Posted by Poochie

Wider winter rubber are unnecessary IMHO, since their inherent softer rubber compound don't make for ultimate BMW handling potential anyways, so your performance will be compromise, regardless of the tire girth.

Smaller is better for winter tires: see for example here and here.

[BigKutta]

Originally Posted by Poochie

My humble advice is when you're replacing those winter tires, go with all four 245s, square; that way you can rotate and stretch them out, not to mention guaranteed no clearance issues.

Wider winter rubber are unnecessary IMHO, since their inherent softer rubber compound don't make for ultimate BMW handling potential anyways, so your performance will be compromise, regardless of the tire girth.

Save the playtime drifting and such for when the summers go back on.

Helpful info:

Agreed and thanks!

[nzafi]

Originally Posted by Poochie

My humble advice is when you're replacing those winter tires, go with all four 245s, square; that way you can rotate and stretch them out, not to mention guaranteed no clearance issues.

Wider winter rubber are unnecessary IMHO, since their inherent softer rubber compound don't make for ultimate BMW handling potential anyways, so your performance will be compromise, regardless of the tire girth.

Save the playtime drifting and such for when the summers go back on.

Helpful info:

please ignore my ignorance, but if stock 245 and people are having issues, how is going square with 245 going to solve that? Folks are having problems with the front while, not the rear.

[AlpsRider]

Although I'm not a fan of Conti summer tires, the Conti Extreme Contact winter tires are the best I've ever had.

[Poochie]

Originally Posted by nzafi

please ignore my ignorance, but if stock 245 and people are having issues, how is going square with 245 going to solve that? Folks are having problems with the front while, not the rear.

I never really heard of anyone having any issues with 245 squared, quite the contrary.

https://www.bimmerpost.com/forums/sh...php?p=23870001

The OP is barely touching the fender trim with 255s, dropping it down a notch to 245s should not at all rub, one would assume.

Or, if you really want to play it safe, 235s at all four corners would work fine also.

[BigKutta]

Originally Posted by nzafi

please ignore my ignorance, but if stock 245 and people are having issues, how is going square with 245 going to solve that? Folks are having problems with the front while, not the rear.

Right, while this thread like most will move in different directions, the concern I am hearing from other folks is that anything but OEM sized PSS will rub. Thats a concern still. I've had a good chance to look at this issue, and its the ridge/kink in the liner, especially where it peaks near the air vents. Not sure whats back there to cause the kink, and I'm also not sure why anyone would put a design feature in a fender liner

[VisualEcho]

Originally Posted by Artemis

Smaller is better for winter tires: see for example here and here.

Although I agree with you in general, the 245 is probably as small as I'd go on the M2 with a 10" rear wheel. Even the stock 265 is stretched, and the 245 Sottozero is quite a bit skinnier than the stock 265 MPSS.

[ROBM2C]

I double checked today.

Full lock and I can still fight a finger inbetween the fender liner and my tire .


255 / 35r19 clears by a finger at full lock in my 2020 bmw m2 competition.


So I wonder if 437s come in different offsets .

[Poochie]

Originally Posted by ROBM2C

I double checked today.

Full lock and I can still fight a finger inbetween the fender liner and my tire .


255 / 35r19 clears by a finger at full lock in my 2020 bmw m2 competition.


So I wonder if 437s come in different offsets .

What kind of tires are you running?

[VisualEcho]

Originally Posted by ROBM2C

So I wonder if 437s come in different offsets .

They do not.

[Artemis]

Originally Posted by VisualEcho

Although I agree with you in general, the 245 is probably as small as I'd go on the M2 with a 10" rear wheel. Even the stock 265 is stretched, and the 245 Sottozero is quite a bit skinnier than the stock 265 MPSS.

I agree.

With 19" wheels on the M2/M2C/M2 CS (437M / 788M / 763M), my rule of thumb is either to remain stock size (245/265 - either for summer or winter tires) or move 1 size up (255/275 - for summer tires) or drop 1 size down (235/255 - for winter tires).

18" wheels is a different story. As known, that wheel size only fits an OG M2 or an M2C featuring stock brakes. An M2C featuring the 2NH M Sport Brakes (stock brakes on an M2 CS) requires 19" wheels because of the brake calipers size.

Winter wheels offered by BMW for the M2 in my country: 640M (18") or 641M (19"):

• 18” 640M (silver): 235/40R18 95V XL (F) | 235/40R18 95V XL (R) | Michelin Pilot Alpin 4* (€2840)
• 18” 640M (silver): 235/40R18 95V XL (F) | 255/35R18 94V XL (R) | Michelin Pilot Alpin 4* (€2900)
• 19” 641M (silver): 235/35R19 91V XL (F) | 235/35R19 91V XL (R) | Michelin Pilot Alpin 4* (€3760)
• 19” 641M (black): 235/35R19 91V XL (F) | 235/35R19 91V XL (R) | Michelin Pilot Alpin 4* (€3900)

Also available: 17"/18"/19" BMW snow chains disc (€360):

[ROBM2C]

Tires are Pirelli sotto zero 3 255/35R19

[BigKutta]

Originally Posted by ROBM2C

Tires are Pirelli sotto zero 3 255/35R19

So we have the same set up on the front - 437M with Sotto 255/35/19. Interesting

[ROBM2C]

It seems we do .

Here are some pics . Let me know if you need more .

[///AVM]

Originally Posted by BigKutta

So we have the same set up on the front - 437M with Sotto 255/35/19. Interesting

Brother Kutta

You have sucked me into the mystery . . .

You have the best of the best chiming in when it comes to knowledgable enthusiasts . . . Poochie, Artemis, VisualEcho, etc

I am not one of them, just an interested party.

I remain curious . . . (1) did you get car aligned after installing new wheels/tires? (2) can you confirm your wheels are legit via serial number or some related method?

I have a hard time believing your wheel-well is just a little tighter than most others produced. . . but, willing to accept it if you are as well.

///AVM

[BigKutta]

Originally Posted by ROBM2C

It seems we do .

Here are some pics . Let me know if you need more .

Thanks Rob. Your wheel is turned past the rub point for me. Using your pic, I've circled the ridge in the liner which I believe is the culprit in my case.

[BigKutta]

Originally Posted by ///AVM

Brother Kutta

You have sucked me into the mystery . . .

You have the best of the best chiming in when it comes to knowledgable enthusiasts . . . Poochie, Artemis, VisualEcho, etc

I am not one of them, just an interested party.

I remain curious . . . (1) did you get car aligned after installing new wheels/tires? (2) can you confirm your wheels are legit via serial number or some related method?

I have a hard time believing your wheel-well is just a little tighter than most others produced. . . but, willing to accept it if you are as well.

///AVM

Yes, I am thankful for all of you.

1) I did not get an alignment after install - Related, several have chimed in with rubbing issues with narrower tires, I'm not the only one with a special liner

2) How can I verify this? Thanks

[ROBM2C]

BigKutta

No problem . I’m tuned in now to see what the difference is .