[FrozenGT]

Hi Guys,

I am trying to understand why One of the head designers in charge of the competition program said that any bigger then a 265 would not fit.

I'm trying to understand BMWs M divisions logic on the tire choices they went with. Even the BMW M performance wheels are only 10 inches wide in the rear and 9 inches wide at the front.

It's going with a tire on the rear that's wider then 265mm would hinder the play fullness with the vehicle is it a better option to go to stay with a 265mm? As going with a bigger option could decrease the ability to have more fun with the vehicle.

[ssabripo]

i don't know which "head designer" told you this, but he must've been pretty drunk, or had taken a couple of good puffs from some purple kush.

You can fit 275/35, 285/30, and even 295/30 on the rears of our cars.

If he meant 265/35 in the fronts than yes, although there are a couple of folks here running 275's up front as well.


I myself am running 295/30 rears in stock rims and suspension, and works perfectly

[medphysdave]

I think there's a little bit of marketing BS, a good bit of science, and a lot of factory constraint.

If I recall the M2 was at the width limit for the assembly line in the factory. BMW seems to spend a fair bit of time ensuring their cars exceed the grip limit in a controlled manner. Vehicle dimensions, and weight will play it's part, but tire size can really play a big part in how the car "let's go". Finally I think they over market the balance a bit and really don't want to step on the m4 too much so they limit the grip a bit.

My 2 cents from monitoring the M2 development over the last few years.

[FrozenGT]

Originally Posted by ssabripo

i don't know which "head designer" told you this, but he must've been pretty drunk, or had taken a couple of good puffs from some purple kush.
You can fit 275/35, 285/30, and even 295/30 on the rears of our cars.
If he meant 265/35 in the fronts than yes, although there are a couple of folks here running 275's up front as well.
I myself am running 295/30 rears in stock rims and suspension, and works perfectly

So I reading an article on here somewhere, I need to find it. It was an interview with the head of M talking about the new M2 Competition. I think someone had asked why they did not use the same size tires that came on the M4 on the M2? I'm asking all this because I feel like buying new set of forged wheels and thinking of 10,5 R 9.5 F. Just trying to understand why M did not go with wider tires.

[Karmic Man]

They also said one main reason the M2C did not have the full M4 tune was the frontal bumper airflow area was less...

The M2CS proved that wasn't the case

[DanG]

Many people are running 255/35/19 front and 275/35/19 in the rear with no problems. That is what I am thinking of doing when my stock tires wear out.

[604MIIC]

Originally Posted by Karmic Man

They also said one main reason the M2C did not have the full M4 tune was the frontal bumper airflow area was less...

The M2CS proved that wasn't the case

How can we go about getting the same output as the M4 s55?

[Got f1?]

Originally Posted by DanG

Many people are running 255/35/19 front and 275/35/19 in the rear with no problems. That is what I am thinking of doing when my stock tires wear out.

Been running that setup. Marginal difference but looks better!

[omasou]

Originally Posted by Got f1?

Been running that setup. Marginal difference but looks better!

+1

Ran that setup on the M2. I think the handling may have been a tad worse but definitely no improvement except the look. Really hate the stretched look of stock tires.

[chris719]

IMO there are 2 reasons, besides the rumor that they would cause issues in Leipzig.

1. It would perform even more closely to the M3 and M4 in magazine tests.
2. Narrower tires usually make a car feel more eager to change direction and the breakaway characteristics might be favorable.

[ChrisK]

Wider tires are slightly heavier and have a higher rolling resistance.

People on here would probably complain about both. :Lol:

[Poochie]

Originally Posted by chris719

IMO there are 2 reasons, besides the rumor that they would cause issues in Leipzig.

1. It would perform even more closely to the M3 and M4 in magazine tests.
2. Narrower tires usually make a car feel more eager to change direction and the breakaway characteristics might be favorable.

It could also be the physical limitations of the 2 Series body dimension is preventing them from hosting larger wheels and tires, on the M2C.

I bet the next time around, when the next gen M2 is designed from scratch and has a longer gestation period, the wheel housing and options will grow exponentially in girth.

[M2-BM35i]

Originally Posted by ssabripo

i don't know which "head designer" told you this, but he must've been pretty drunk, or had taken a couple of good puffs from some purple kush.

You can fit 275/35, 285/30, and even 295/30 on the rears of our cars.

If he meant 265/35 in the fronts than yes, although there are a couple of folks here running 275's up front as well.


I myself am running 295/30 rears in stock rims and suspension, and works perfectly

I'm about to go this route - what are you running at front?

[chris719]

Originally Posted by Poochie

It could also be the physical limitations of the 2 Series body dimension is preventing them from hosting larger wheels and tires, on the M2C.

I bet the next time around, when the next gen M2 is designed from scratch and has a longer gestation period, the wheel housing and options will grow exponentially in girth.

People seem to be able to get stock F82 sizes on without too much of an issue, it appears they would have only had to make small tweaks to the fender or wheel well. You could be right though.

[243Racing]

Originally Posted by chris719

People seem to be able to get stock F82 sizes on without too much of an issue, it appears they would have only had to make small tweaks to the fender or wheel well. You could be right though.

I run 255/275. The stock sizes make no sense.

[pz619]

Originally Posted by ChrisK

Wider tires are slightly heavier and have a higher rolling resistance.

People on here would probably complain about both. :Lol:

We have to be mad about something.

If fitted with 245/265 - complain about it being undertired and lack of traction
If fitted with 255/275 - complain about it being too heavy and hard to break loose

[ssabripo]

Originally Posted by pz619

We have to be mad about something.

If fitted with 245/265 - complain about it being undertired and lack of traction
If fitted with 255/275 - complain about it being too heavy and hard to break loose

if fitted with 245/295 - complain about slight increase of understeer at peak push, but have a smile from ear to ear for better overall handling, and beautiful aggressive look

[Artemis]

Originally Posted by FrozenGT

So I reading an article on here somewhere, I need to find it. It was an interview with the head of M talking about the new M2 Competition. I think someone had asked why they did not use the same size tires that came on the M4 on the M2? I'm asking all this because I feel like buying new set of forged wheels and thinking of 10,5 R 9.5 F. Just trying to understand why M did not go with wider tires.

This page of 2015 about the original M2 popped up in my mind straightaway.
(source: here)

By the way: on my ex M2 and current M2C: 255/35 R19 front + 275/35 R19 rear = zero issues (see the dedicated thread here).

[pz619]

Originally Posted by ssabripo

if fitted with 245/295 - complain about slight increase of understeer at peak push, but have a smile from ear to ear for better overall handling, and beautiful aggressive look

That's the spirit! See, we can be mad about anything.