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      10-10-2016, 09:01 AM   #23
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Quote:
Originally Posted by ApexRaceParts View Post
Thank you for your post. The fitment that you have listed will be aggressive/flush on the M2, and may in fact require modification in the form of negative camber. This particular fitment has worked well for many enthusiasts, but I just want to clarify that it is not always a guaranteed bolt-on fitment. There are many variables at play here, especially for a track oriented setup where maximizing wheel width and tire width is the goal. Vehicle ride height, suspension type, camber specifications, and tire brand will make all the difference.

We do not have extensive experience with the M2 platform just yet, but I would like to further explore the limits of this chassis once we are able to perform more R&D.

We will update the community as we learn more

- Ryan
So there's no way a e9x fitment EC7 18x10 ET 25 square with a 285 hoho will fit then I assume.
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      10-10-2016, 01:56 PM   #24
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Quote:
Originally Posted by CosmosMpower View Post
So there's no way a e9x fitment EC7 18x10 ET 25 square with a 285 hoho will fit then I assume.
It might be possible with negative camber and rear fender rolling, but a higher wheel offset would be encouraged. The 18x10 ET25 would be very aggressive, and certainly not a bolt-on fitment. The M2 chassis presents the same issue as the F8X M3/M4 chassis, only slightly worse. These chassis do not lend themselves to wide square fitments like the E46 M3, E9X M3 and 1M. I have added the 18x10" ET33 to the list of comparisons from my previous post...



When looking at one of the OEM wheel configurations on the M2 as a baseline, 19x9" ET29 front & 19x10" ET40 rear, we can compare a couple different square options:


APEX 18x9.5" ET22

Up front, our 18x9.5" ET22 will have just about the same inner strut clearance (1mm more), and the outside edge of the wheel will EXTEND an extra 13mm towards the front fenders.

In the rear, our 18x9.5" ET22 will have 24mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 12mm towards the rear fenders.

For a street car looking for a flush fitment with street tires, this is probably a good way to go with 265/35-18 street tires. The lower offset would lend itself to a flush fitment without the need for spacers, Depending on ride height and tire brand, a small amount of neg camber may be necessary.

For a track car running r-compounds, it may be better to run our 18x9.5" ET35 wheel for more clearance to the fenders front and rear, allowing more space for r-compounds that tend to run wider then the avg. street tire. This would also allow more room should the driver want to bump up to 275's.

APEX 18x9.5" ET35

Up front, our 18x9.5" ET35 will have 12mm LESS clearance on the strut side, and the outside edge of the wheel will be at the same point.

In the rear, our 18x9.5" ET35 will have 11mm MORE clearance on the strut side, and the outside edge of the wheel will RETRACT 1mm.

With 12mm less clearance to the front struts, this fitment would likely need small spacers up front for proper strut clearance.


APEX 18x10" ET33 - Square

Up front, our 18x10" ET33 will have 17mm LESS clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 9mm towards the front fenders

In the rear, our 18x10" ET33 will have 7mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 7mm towards the rear fenders

With 17mm less clearance to the front struts, this fitment would definitely need small spacers up front for proper strut clearance. Negative camber would also be a must for the front of the car.


- Ryan

Last edited by ApexRaceParts; 10-10-2016 at 02:41 PM..
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      10-10-2016, 02:27 PM   #25
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My first photo is post #3 is of the EC-7 in 18x9.5 et22 square with 265/35/18.
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      10-10-2016, 02:37 PM   #26
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Quote:
Originally Posted by BD_F87 View Post
Hey Ryan thanks for the in dept analysis of wheel fitments, now with my understanding though you are saying 18x9.5 ET22 with a 265 out back would be a very flush fitment with no spacers.. If we went with a 18x10.5 ET32 or ET42 would that allow us to incremently up the tire width to compensate for the offset? So theoretically if I went 18x10.5 ET32 would I be able to fit a 275 and if I went 18x10.5 ET42 would I be able to fit a 285? My logic is if I am losing 10mm in offset but adding it in tire width it would equate to the same thing? Am I close or way off?
You are correct. Staggered fitments are going to be a bit easier to execute on this chassis over square fitments.

An 18x10.5" ET32 in comparison to the stock 10" ET40 wheel would have 2mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 14mm

An 18x10.5" ET40 in comparison to the stock 10" ET40 wheel would have 6mm LESS clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 6mm.



- Ryan
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      10-10-2016, 02:42 PM   #27
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Quote:
Originally Posted by David@ActiveAutowerke View Post
My first photo is post #3 is of the EC-7 in 18x9.5 et22 square with 265/35/18.
Appreciate the photo! Do you know if the car has any negative camber dialed in? Also, what type of tires is she running?

- Ryan
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      10-10-2016, 02:51 PM   #28
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Quote:
Originally Posted by ApexRaceParts View Post
Appreciate the photo! Do you know if the car has any negative camber dialed in? Also, what type of tires is she running?

- Ryan
Ryan, unfortunately I don't know exactly how much negative camber the car had in that photo. The photo was taken immediately after we installed the coilovers with the camber plates set exactly where they were out of the box. The rear camber was untouched as well, but I'd assume that there would be slight camber gain from the drop. The tires are Michelin PSS.

That said, we're now running 18x10 et23 275/35/18 up front with -2.5* so the 9.5 et22 with 265/35 should be fine even with a little less camber.
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      10-10-2016, 03:11 PM   #29
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Quote:
Originally Posted by David@ActiveAutowerke View Post
Ryan, unfortunately I don't know exactly how much negative camber the car had in that photo. The photo was taken immediately after we installed the coilovers with the camber plates set exactly where they were out of the box. The rear camber was untouched as well, but I'd assume that there would be slight camber gain from the drop. The tires are Michelin PSS.

That said, we're now running 18x10 et23 275/35/18 up front with -2.5* so the 9.5 et22 with 265/35 should be fine even with a little less camber.
That is great info David, thank you!

- Ryan
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      10-16-2016, 05:55 AM   #30
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Quote:
Originally Posted by David@ActiveAutowerke View Post
Your offset is probably wrong. We have fit multiple sets of 18" wheels on our M2 including a set of APEX's.




Hi there, can you confirm what wheels are in these two photos, including sizes?

Thanks,

Nick
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      10-28-2016, 02:38 PM   #31
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What would the recommendation be for an EC7 staggered setup for a dual purpose street/track, along with tire sizes?
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      11-17-2016, 10:28 AM   #32
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Quote:
Originally Posted by David@ActiveAutowerke View Post
Ryan, unfortunately I don't know exactly how much negative camber the car had in that photo. The photo was taken immediately after we installed the coilovers with the camber plates set exactly where they were out of the box. The rear camber was untouched as well, but I'd assume that there would be slight camber gain from the drop. The tires are Michelin PSS.

That said, we're now running 18x10 et23 275/35/18 up front with -2.5* so the 9.5 et22 with 265/35 should be fine even with a little less camber.
Does the 18X10 ET23 with a 275 fit in the rear also?
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      11-18-2016, 05:32 PM   #33
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Tried to fit 18x10 +25 with 285 hoosiers and I don't think it will work. The offset is too low and the wheel is a bit too wide. The EC7's clear the calipers though barely.

Edit: Not sure why the pics are sideways when uploaded
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      11-18-2016, 06:07 PM   #34
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Thanks for taking risks on this setup and sharing the info CosmosMpower
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      11-18-2016, 06:29 PM   #35
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Quote:
Originally Posted by EL BAN View Post
Thanks for taking risks on this setup and sharing the info CosmosMpower
I already had these wheel/tires from my e9x so I thought I'd try them. I did not drive on them as when I mounted them the offset was obviously too low and the wheel stuck out past the fender. I think it had enough clearance on the strut side but not much so I'm not sure how a 33 offset would fit in the front.

I'm likely going to go with a narrower wheel like a 9.5 and a higher offset.
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      11-18-2016, 06:39 PM   #36
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Quote:
Originally Posted by CosmosMpower View Post
Quote:
Originally Posted by EL BAN View Post
Thanks for taking risks on this setup and sharing the info CosmosMpower
I already had these wheel/tires from my e9x so I thought I'd try them. I did not drive on them as when I mounted them the offset was obviously too low and the wheel stuck out past the fender. I think it had enough clearance on the strut side but not much so I'm not sure how a 33 offset would fit in the front.

I'm likely going to go with a narrower wheel like a 9.5 and a higher offset.
Glad it was a set you had. I was thinking you took a chance with it and pulled the trigger. This still is valuables info for all of us. I have been set on a 18x9.5 set Tire Rack has been offering, you probably saw the thread but I see the benefit of the square setup to rotate tires easily and maximize their track life but I am concerned with other topics were people mention the computers don't like the non staggered setups and I am not ready to run Full DSC off. And also read people like Randy Pobst saying the M2 plays well with the staggered setup and should be kept that way to retaing its driving dynamics.
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      11-18-2016, 09:31 PM   #37
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Quote:
Originally Posted by EL BAN View Post
Glad it was a set you had. I was thinking you took a chance with it and pulled the trigger. This still is valuables info for all of us. I have been set on a 18x9.5 set Tire Rack has been offering, you probably saw the thread but I see the benefit of the square setup to rotate tires easily and maximize their track life but I am concerned with other topics were people mention the computers don't like the non staggered setups and I am not ready to run Full DSC off. And also read people like Randy Pobst saying the M2 plays well with the staggered setup and should be kept that way to retaing its driving dynamics.
I'm going to buy the TR set. I always track with everything off and I wonder if Pobst actually tried a square set up or was just commenting that the factory staggered setup works ok.

In my experience all BMW's do well with a square set up.
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      11-18-2016, 09:40 PM   #38
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Quote:
Originally Posted by CosmosMpower View Post
Quote:
Originally Posted by EL BAN View Post
Glad it was a set you had. I was thinking you took a chance with it and pulled the trigger. This still is valuables info for all of us. I have been set on a 18x9.5 set Tire Rack has been offering, you probably saw the thread but I see the benefit of the square setup to rotate tires easily and maximize their track life but I am concerned with other topics were people mention the computers don't like the non staggered setups and I am not ready to run Full DSC off. And also read people like Randy Pobst saying the M2 plays well with the staggered setup and should be kept that way to retaing its driving dynamics.
I'm going to buy the TR set. I always track with everything off and I wonder if Pobst actually tried a square set up or was just commenting that the factory staggered setup works ok.

In my experience all BMW's do well with a square set up.
Thats a good question. I need to lookup that thread again. It sounded like he was going off of how the car handled with the OEM setup. Sounded like he said it did not need a square setup to help balance the car out which is what the square setup does to other M cars like the 1M, M3 and M4 :

I pushed the car hard during PCD and never felt it over or under steering.. maybe didnt push it enough..
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      11-19-2016, 11:16 PM   #39
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Quote:
Originally Posted by EL BAN View Post
Thats a good question. I need to lookup that thread again. It sounded like he was going off of how the car handled with the OEM setup. Sounded like he said it did not need a square setup to help balance the car out which is what the square setup does to other M cars like the 1M, M3 and M4 :

I pushed the car hard during PCD and never felt it over or under steering.. maybe didnt push it enough..
Drove my car on track today, the turn in is very good even on stock alignment and crap Conti tires. Definitely doesn't push on turn in. I don't think square setup would hurt at all though.
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      11-20-2016, 02:43 AM   #40
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Hi guys!

I haven't got an M2 yet, i'm planning to buy it next year, but i'm preparing.
I would like to use 18" wheels (which i currently have) for DD use, but i'm not sure they can be fitted to the M2 since it has so big brakes.
I know the brake disc diameter is 380 mm but how much further the caliper extends? Can somebody measure the radius of the caliper's outer edge from the center?
It would be a useful info for many people what is the smallest wheel inner diameter we can use.
Thanks!
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      06-18-2017, 12:16 AM   #41
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Anyone know if 18X9" ET31 /18X10" ET33 APEX EC-7 WHEELS with 265/35/18 and 275/35/18 would fit stock suspension?

I want to stay in B stock/street autocross class so the above fitments and widths would have to be used.
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      06-19-2017, 03:33 PM   #42
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Quote:
Originally Posted by Mr 2 View Post
Anyone know if 18X9" ET31 /18X10" ET33 APEX EC-7 WHEELS with 265/35/18 and 275/35/18 would fit stock suspension?

I want to stay in B stock/street autocross class so the above fitments and widths would have to be used.
This fitment will work on stock suspension. For the record (others reading this) we would typically recommend 9.5" wheels up front for 265's. Since you have to comply with class rules, I totally get it.

- Ryan
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      06-19-2017, 11:02 PM   #43
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Thanks Ryan, one more question do oem lug nuts fit or aftermarket tuner ones required?
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      06-20-2017, 04:38 AM   #44
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Quote:
Originally Posted by David@ActiveAutowerke View Post
Your offset is probably wrong. We have fit multiple sets of 18" wheels on our M2 including a set of APEX's.



Looks superb.

What front camber are you running on your white M2 ?

Is it setup for dual use ie street and track or predominantly track use ??
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