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      10-01-2012, 04:07 PM   #1
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► APEX | EC-7 Wheels - Clears Brembo 380mm BBK!!! *BRAND NEW!!*

Thanks for your interest in our EC-7 wheels! This thread has been closed, but the discussion continues on our combined Flow Formed wheel thread at: https://www.e90post.com/forums/showt...4#post25582474

We hope to see you there!
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      10-16-2012, 06:41 PM   #2
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Cool! These will definitely be the wheels I buy as part of my next round of mods. A few quick questions though. This would be the first time I've bought aftermarket wheels and I'm searching for answers as much as I can (learning a lot too!), but I still haven't found certain answers. Apologies if these questions are rudimentary/constantly asked:

1. I would be running these with Vorshlag camber plates and -2.5 to -3 camber in the front and probably -2 in the back, otherwise completely stock. Of the sizes above listed as "M3 Fitment", what is the largest wheel that would fit in the front and rear wheel wells, and do the camber plates and settings change the answer to this question? I know that fit will also depend on tire size, but for example will some of your wheel sizes not fit in the front or back no matter what tire is used?

2. Looking at acceptable wheel sizes for various tire sizes, it seems that tires that fit a 9.5" wheel also tend to fit a 10.5" wheel, and tires that fit a 10.5" wheel also tend to fit an 11" wheel. What should I take into consideration when deciding which wheel size to use with a given tire size if more than one wheel size will fit the tire and the car's wheel well? I'm assuming it's not aesthetics or widening the vehicle track since the indicated offsets suggest that wider wheels add most of their width on the inside, which would actually narrow the vehicle track.

3. Your website results page for the E9x M3 wheels has a glitch. The 11" wheel's offset is listed on the summary page as ET27, but when you click to that wheel it's listed as ET25, which is what's posted here as well. Page I'm referring to: http://www.apexraceparts.com/3-Serie...2-M3_c_33.html
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      10-17-2012, 12:22 PM   #3
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Quote:
Originally Posted by jphughan View Post
Cool! These will definitely be the wheels I buy as part of my next round of mods. A few quick questions though. This would be the first time I've bought aftermarket wheels and I'm searching for answers as much as I can (learning a lot too!), but I still haven't found certain answers. Apologies if these questions are rudimentary/constantly asked:

1. I would be running these with Vorshlag camber plates and -2.5 to -3 camber in the front and probably -2 in the back, otherwise completely stock. Of the sizes above listed as "M3 Fitment", what is the largest wheel that would fit in the front and rear wheel wells, and do the camber plates and settings change the answer to this question? I know that fit will also depend on tire size, but for example will some of your wheel sizes not fit in the front or back no matter what tire is used?

2. Looking at acceptable wheel sizes for various tire sizes, it seems that tires that fit a 9.5" wheel also tend to fit a 10.5" wheel, and tires that fit a 10.5" wheel also tend to fit an 11" wheel. What should I take into consideration when deciding which wheel size to use with a given tire size if more than one wheel size will fit the tire and the car's wheel well? I'm assuming it's not aesthetics or widening the vehicle track since the indicated offsets suggest that wider wheels add most of their width on the inside, which would actually narrow the vehicle track.

3. Your website results page for the E9x M3 wheels has a glitch. The 11" wheel's offset is listed on the summary page as ET27, but when you click to that wheel it's listed as ET25, which is what's posted here as well. Page I'm referring to: http://www.apexraceparts.com/3-Serie...2-M3_c_33.html
1. The largest wheel you can fit on the front directly without your camber plates would be the 18x10" ET25, and you can fit a 265/35/18 or 275/35/18 on that wheel. This would be paired up with the 18x11" ET25 in the rear, in which you can fit the 285/35/18 or 295/30/18 tire onto. The camber plates do not change the fitment of the wheels, however they do help with running wider tires on the front wheels and with tire wear during track use.

All of the wide wheels we offer work with the e9x M3 platform in the rear, you just have to make sure you are getting the correct tire sizes. The front of the car can take up to the 18x10.5" ET25, but that is not something normally recommended as you would need to do some modifications for it to work such as removing fender liner and possibly a small spacer so that the wheel and tire clears the strut.

2. Though tires can fit onto multiple width wheels, the sidewall would be different depending on the width of the wheel, thus changing the characteristics of the tire and how it responds to the car. For example, if you put a 275/35/18 on a 18x9.5" ET22 wheel, the tire's sidewalls will bulge since it is oversized slightly and would cause a little sidewall flex. Move that tires to the 18x10" ET25 and it would have the correct sidewall support, and should be relatively straight & stiff, thus would respond as it should. If you go and put that same tire on the 18x11" ET25 wheel, the tire sidewall would then be slightly stretched as the tires are a bit undersized and can make the car a bit twitchy.

Wheel and tire size choice would solely be dependent on what you are looking to gain from the wheels and tires. If you are simply looking to put the widest rear wheel and tire on your M3, you can get the 18x10" ET25 and 18x11" ET25 staggered setup to run a 295 or in some cases the 305 width tire in the rear with some fender work. If you are tracking the car and looking to neutralize the car from understeering, you may want to go with the 18x10" ET25 squared with a 275/35/18 tire all around.

3. Thank you for pointing this out, we will have that fixed!

Quote:
Originally Posted by jphughan View Post
^ Awesome, thanks so much David! I'm definitely looking for a squared setup -- I didn't realize the front could handle a 10" wheel with 275 tires and no modifications and still not rub, that's fantastic! That makes me wonder why so many people seem to run 265/35/18 all around at the track, though, since the cost difference doesn't seem very much and the number of tire choices between the two sizes seems to be fairly similar as well -- would the added size and weight of the 275s upfront negatively affect the steering feel, perhaps?

Thanks again, I think a set of these along with camber plates is definitely going to be my next mod!
Depending on the tire you choose, tires that are extreme performance or R-compound tires in 275/35/18 may slightly rub on the plastic of the fender liner. This rubbing is very negligible and is not a problem at all, as it is only slightly touching the plastics of the fender liner, and some people would only experience the rub under hard cornering for very short periods of time.

For staggered setups, some people run 18x9.5" ET22 and 18x10.5" ET27, in which the 265/35/18 would have better sidewall support for the front. For squared setups, plenty of people run 275/35/18 on the 18x10" ET25 wheels as opposed to the 265/35/18.
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      10-17-2012, 12:55 PM   #4
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^ Awesome, thanks so much David! I'm definitely looking for a squared setup to reduce understeer on the track -- I didn't realize the front could handle a 10" wheel with 275 tires and no modifications and still not rub, that's fantastic! That makes me wonder why so many people seem to run 265/35/18 all around at the track, though, since the cost difference doesn't seem very much and the number of tire choices between the two sizes seems to be fairly similar as well -- would the added size and weight of the 275s upfront negatively affect the steering feel, perhaps?

Thanks again, I think a set of these along with camber plates is definitely going to be my next mod!

EDIT: I see the 10-inch wheel listed here as an M3 Fitment, but it's not listed as a possibility on the E9x M3 results page on your website (same link as I posted earlier regarding the offset glitch). Is that a listing error or is the EC-7 18x10 ET25 not usable in a square setup on a stock E92 M3? Also, would you recommend using the ET25 18x10" wheel on all 4 corners to maintain the stock relative track width (or near as possible), or would it be best to use a different offset front to back?
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      11-01-2012, 05:04 PM   #5
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Good seeing you again out at Buttonwillow David. My EC-7's are coming soon eh?
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      11-02-2012, 05:30 PM   #6
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Quote:
Originally Posted by LateBraking View Post
Good seeing you again out at Buttonwillow David. My EC-7's are coming soon eh?
Yes they sure are! I'm excited to see them on your car

Hope to see you out at a track day again soon!
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      06-25-2013, 07:51 AM   #7
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Are these wheels stronger than ARC-8's?

Is there any rubbing/fitment issues with a square 18 x 10 ET25 setup with RS3's?
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      06-25-2013, 09:26 AM   #8
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I just got my set on Saturday. They look great. I previously had ARC-8's on my last car, but these have a bit more strength, a tiny bit more weight, but lots better looks, IMO.

Running 275/35/18 NT-01 on 18x10 ET25 square.
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      06-25-2013, 11:15 AM   #9
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Quote:
Originally Posted by larryn View Post
I just got my set on Saturday. They look great. I previously had ARC-8's on my last car, but these have a bit more strength, a tiny bit more weight, but lots better looks, IMO.

Running 275/35/18 NT-01 on 18x10 ET25 square.
Very nice. Do you have any rubbing or fitment issues with the 18 x 10 front wheels?
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      06-25-2013, 02:25 PM   #10
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Quote:
Originally Posted by 03///m3 View Post
Are these wheels stronger than ARC-8's?

Is there any rubbing/fitment issues with a square 18 x 10 ET25 setup with RS3's?
The EC-7 was engineered to be a little stronger in the center than the ARC-8 while the rims on both are of equal strength. More material was added to the spokes of the EC-7 to enhance its strength and durability. The additional material adds a little more weight but doesn’t sacrifice performance as the added weight is towards the center of the wheel, which does not significantly impact rotational weight.

We have had customers use 275/35/18 Hankook RS3s with the 18x10" ET25 EC-7's only rub on the fender liner at full lock or hard turning. The rubbing is very minimal and can be alleviated with added negative camber.

Quote:
Originally Posted by larryn View Post
I just got my set on Saturday. They look great. I previously had ARC-8's on my last car, but these have a bit more strength, a tiny bit more weight, but lots better looks, IMO.

Running 275/35/18 NT-01 on 18x10 ET25 square.
Sounds like a phenomenal car, we would love to see photos of it!
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      06-25-2013, 04:16 PM   #11
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Quote:
Originally Posted by David@ApexRaceParts View Post
The EC-7 was engineered to be a little stronger in the center than the ARC-8 while the rims on both are of equal strength. More material was added to the spokes of the EC-7 to enhance its strength and durability. The additional material adds a little more weight but doesn’t sacrifice performance as the added weight is towards the center of the wheel, which does not significantly impact rotational weight.

We have had customers use 275/35/18 Hankook RS3s with the 18x10" ET25 EC-7's only rub on the fender liner at full lock or hard turning. The rubbing is very minimal and can be alleviated with added negative camber.



Sounds like a phenomenal car, we would love to see photos of it!
Ok thanks for the info. So would you recommend the 18 x 9.5 front with 265/35 RS3's for no rubbing?
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      06-26-2013, 12:43 PM   #12
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Quote:
Originally Posted by 03///m3 View Post
Ok thanks for the info. So would you recommend the 18 x 9.5 front with 265/35 RS3's for no rubbing?
Yes we do recommend that setup for no rubbing. You can even go with a 275/35/18 Hankook R-S3 and not experience any rubbing issues!
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      07-08-2013, 05:36 PM   #13
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Quote:
Originally Posted by ApexRaceParts View Post
Check out Pure Performance's stripped out E92 M3 race car was sporting Anthracite EC-7's with an 18x11" rear wheel at Bimmerfest 2013 in Pasadena:



Call us today with any questions or if you'd like to order a new set for your street, track, or race application!
Wow looks awesome. What tires/sizes are those?

What are the specs on the front wheels...18x10?

Thanks.
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      07-08-2013, 06:07 PM   #14
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Quote:
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Wow looks awesome. What tires/sizes are those?

What are the specs on the front wheels...18x10?

Thanks.
Those are the EC-7's in 18x10.5" ET27 fronts and 18x11" ET25, and they are wrapped in Michelin Slicks, which is sized differently than normal tires. Front is 27/65/18 and the rear is 30/65/18, which is similar to ~280 width front and ~315 width rears.
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      07-09-2013, 11:51 AM   #15
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Quote:
Originally Posted by David@ApexRaceParts View Post
Those are the EC-7's in 18x10.5" ET27 fronts and 18x11" ET25, and they are wrapped in Michelin Slicks, which is sized differently than normal tires. Front is 27/65/18 and the rear is 30/65/18, which is similar to ~280 width front and ~315 width rears.
Cool thanks. You mentioned these will clear Brembo's...will they also clear StopTechs? I have ST60 Front 380x35 and ST40 Rear 355x32 will Drilled Rotors.

Looking at 18x10 et 25 F and 18x11 et 25 R wheels with RS3's 275/35/18 F and 285/35/18R. Hoping this combo will fit with my StopTech brakes and stock ZCP suspension with GC camber plates with -2.3 camber front and -1.6 camber rear. Let me know. Thanks!
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      07-09-2013, 12:00 PM   #16
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Quote:
Originally Posted by Longboarder View Post
Cool thanks. You mentioned these will clear Brembo's...will they also clear StopTechs? I have ST60 Front 380x35 and ST40 Rear 355x32 will Drilled Rotors.

Looking at 18x10 et 25 F and 18x11 et 25 R wheels with RS3's 275/35/18 F and 285/35/18R. Hoping this combo will fit with my StopTech brakes and stock ZCP suspension with GC camber plates with -2.3 camber front and -1.6 camber rear. Let me know. Thanks!
Yes the 18x10" ET25 and 18x11" ET25 EC-7's will surely clear the StopTech 6 piston 380mm BBK on your M3. We mention the Brembo 6 piston 380mm BBK because Brembo tends to use the largest caliper from our past experiences for the 380mm BBKs available on the e9x M3. This wheel setup will surely work with your car with the use of Hankook RS3s in 27/35/18 and 285/35/18 with your current stock suspension and camber settings!
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      07-11-2013, 11:28 PM   #17
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Just got these. They totally rock. Spent the weekend at Oregon Raceway Park, and had this shot emailed to me while I was going ~120 mph on the front straight.
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      07-12-2013, 12:29 AM   #18
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One more, without wheel blur.
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      07-12-2013, 06:28 PM   #19
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Quote:
Originally Posted by larryn View Post
Just got these. They totally rock. Spent the weekend at Oregon Raceway Park, and had this shot emailed to me while I was going ~120 mph on the front straight.
Quote:
Originally Posted by larryn View Post
One more, without wheel blur.
Thanks for the positive feedback. We always love to see these types of pictures with our wheels in action! Please let us know if you need anything else for your M3
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      08-01-2013, 08:39 PM   #20
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any photos of 18x9.5 et 22 square without spacers? I am interested in this set since I have kw clubsports but I am afraid the rear might look sunken in.
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      08-02-2013, 06:25 PM   #21
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Quote:
Originally Posted by biggynuts01 View Post
any photos of 18x9.5 et 22 square without spacers? I am interested in this set since I have kw clubsports but I am afraid the rear might look sunken in.
Unfortunately we do not have any photos of this at the moment. Is there a reason why you don't want to go with an 18x10" ET25 square setup? This is our most popular square setup for the E9x as it fills out the fenders very well and does not require any spacers or camber to fit it. You can safely run 275/35/18 street tires on the 18x10" ET25 wheels and you'll still have the added benefits of reduced understeer and the ability to rotate tires.

Please give us a call if you have any other questions about these wheels and we'd be happy to help you out!
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      09-22-2013, 06:32 AM   #22
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18x10 square with hankook TD tires 285/30/18 will work fine without any rubbing?

lowered on ohlins R&T and vorshlag camber plates -3.0 front
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