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M2 Technical Topics > Wheels / Tires -- Sponsored by The Tire Rack > Custom Forgestar 19x10 and 19x11 wheels for M2

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      09-14-2017, 12:32 PM   #1
Milhaus
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Custom Forgestar 19x10 and 19x11 wheels for M2

We managed to get some real healthy rubber under all 4 corners of the M2. These 19x10 and 19x11 custom spec'd Forgestar CH10 wheels with some sticky RE-71R tires makes for a pretty impressive combination.

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      09-14-2017, 02:04 PM   #2
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So what did the offsets come out to be front and rear?
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      09-14-2017, 09:16 PM   #3
Milhaus
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Quote:
Originally Posted by maddoc View Post
So what did the offsets come out to be front and rear?
I don't have the specs with me at the moment. I can look them up on our order sheet. However, due to our custom setup, our wheel specs are not guaranteed to work on your vehicle. That is why we measured 6 times and ordered once!
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      09-15-2017, 11:26 AM   #4
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Can you fit bigger tires on the rears? Why 285?
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      09-15-2017, 12:26 PM   #5
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Originally Posted by Yiruna View Post
Can you fit bigger tires on the rears? Why 285?
The car has been optimized for a non-square setup unlike the e36 and e46 that showed benefits by going to a square setup. 285mm rear and 265mm front were the largest tire we could fit without pulling, rolling, or cutting the fenders.

Could you get bigger tires under there? Perhaps. But we quickly ran into an equation with diminishing returns.
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      09-15-2017, 12:48 PM   #6
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Interested in the offsets of these as well. Looks great OP!
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      09-15-2017, 07:12 PM   #7
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Quote:
Originally Posted by Milhaus View Post
Quote:
Originally Posted by Yiruna View Post
Can you fit bigger tires on the rears? Why 285?
The car has been optimized for a non-square setup unlike the e36 and e46 that showed benefits by going to a square setup. 285mm rear and 265mm front were the largest tire we could fit without pulling, rolling, or cutting the fenders.

Could you get bigger tires under there? Perhaps. But we quickly ran into an equation with diminishing returns.
Can you elaborate on what makes you say that the M2 is optimized for non square setup?

Every BMW including the M235 and F8X does benefit on track from the added balance and diminished under steer of a square setup. What makes the M2 different?
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      09-15-2017, 11:51 PM   #8
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Quote:
Originally Posted by Ramos View Post
Can you elaborate on what makes you say that the M2 is optimized for non square setup?

Every BMW including the M235 and F8X does benefit on track from the added balance and diminished under steer of a square setup. What makes the M2 different?
I think you answered your own question when you added 'on track'. The reason the non-square setup has minor advantages on the street is the 'nannies' are designed with the non-square parameters in mind. And a pushy/loose car is erring on the safe side.

I believe, but don't have any hard evidence to prove this, that the F8x will benefit from a square setup in a true track setup. I will leave that one open until after I get some data.
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      07-14-2018, 06:50 AM   #9
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Quote:
Originally Posted by Milhaus View Post
We managed to get some real healthy rubber under all 4 corners of the M2. These 19x10 and 19x11 custom spec'd Forgestar CH10 wheels with some sticky RE-71R tires makes for a pretty impressive combination.

Is your m2 lowered? I'm thinking of going for the same wheel setup but on michelin ps4s and lowered on either kw clubsport or ohlins r&t.

I'd like to know what are your offset as well.

Do u rub on the rear or the front? Is it a light rub which can be solved by a fender roll?
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      07-15-2018, 02:25 PM   #10
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Would be interested in the offsets as well
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      07-19-2018, 11:58 PM   #11
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Nice
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      07-26-2018, 06:05 PM   #12
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Would like to bump this thread for feedback
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      07-27-2018, 11:40 AM   #13
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Loving the wheels!
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      10-02-2018, 06:55 PM   #14
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lol, guy is keeping his offset's a secret it seems
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      11-25-2018, 05:26 AM   #15
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Quote:
Originally Posted by @nadeemster View Post
lol, guy is keeping his offset's a secret it seems
Appears to be
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      12-05-2018, 07:41 AM   #16
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Quote:
Originally Posted by Milhaus View Post
I think you answered your own question when you added 'on track'. The reason the non-square setup has minor advantages on the street is the 'nannies' are designed with the non-square parameters in mind. And a pushy/loose car is erring on the safe side.

I believe, but don't have any hard evidence to prove this, that the F8x will benefit from a square setup in a true track setup. I will leave that one open until after I get some data.
Even on the street the square setup I use in winter on the F80 is superior as far as balance is concerned. It's so much easier to anticipate and recognize when the rear will let go etc.

Only issue is where traction is concerned from standstill. Hence I run 305s in summer.
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      11-18-2020, 03:36 PM   #17
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really wish we could've gotten some offsets from these wheels.
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      04-05-2021, 01:17 PM   #18
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Offsets please
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