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      04-17-2014, 04:58 PM   #1
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► APEX | ARC-8 Light Weight Track Wheels

Thanks for your interest in our ARC-8 wheels! This thread will no longer be updated, but the discussion continues on our combined Flow Formed wheel thread at: https://f30.bimmerpost.com/forums/sh...1#post25582391

We hope to see you there!
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      06-11-2014, 04:25 PM   #2
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All orders have been shipped today.
Thank you for your support.
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      09-16-2014, 05:03 PM   #3
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Have these wheels been tested to fit over the m performance brakes? Specifically the 18x8.5" ET35?
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      09-16-2014, 05:56 PM   #4
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Quote:
Originally Posted by Jimminez View Post
Have these wheels been tested to fit over the m performance brakes? Specifically the 18x8.5" ET35?
Yes, the ARC-8 18x8.5" ET38 wheel will in clear the M performance brakes

Last edited by Expert@ApexWheels; 06-26-2017 at 12:30 PM..
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      11-12-2014, 02:11 PM   #5
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We would just like to take a second to thank everyone who has ordered from us today; we will be shipping your orders out shortly.
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      06-26-2015, 12:03 PM   #6
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      08-14-2015, 07:32 PM   #7
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This F30 is one of opur favorites!

APEX Wheels: ARC-8 18x8.5 ET38 square
Tires: 235/40-18 Bridgestone RE-71R
Spacers: F: 12mm R: 18mm
* Note the spacer are not required, however this customer wanted an aggressive look and had some negative camber dialed in



Please contact us with any questions that you may have, we have wheel experts ready for your calls, emails & PM's.
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      06-03-2016, 02:58 PM   #8
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Do those two cars have the same setups? What's the ideal 18" square setup with the ARC-8 and a lowered car?
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      06-06-2016, 05:16 PM   #9
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Quote:
Originally Posted by SLOWER View Post
Do those two cars have the same setups? What's the ideal 18" square setup with the ARC-8 and a lowered car?
Both of those cars are running our 18x8.5" ET38 with 235/40/18 tires. This is a direct fit and will work great on a lowered car!

-Matt
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      09-19-2016, 04:57 PM   #10
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Send us a PM, email, or give us a call if you have any questions regarding the perfect fitment for your car, or if you'd like to check if we have a particular finish or size in stock.
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      11-06-2016, 04:03 PM   #11
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What would it take to run 18x9.5 all around? Different offsets? Also would like to run wide tires as well. I have a 335i M Sport with the M Sport brakes.
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      11-08-2016, 05:15 PM   #12
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Quote:
Originally Posted by R32DBP View Post
What would it take to run 18x9.5 all around? Different offsets? Also would like to run wide tires as well. I have a 335i M Sport with the M Sport brakes.
The F30 chassis does not lend itself to aggressive wheel/tire fitments, so the 18x9.5" square fitment would be quite difficult. Do you have adjustable camber plates up front? Also, what are you tire goals (brand & size)?

- Ryan
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      11-08-2016, 09:04 PM   #13
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Quote:
Originally Posted by Expert@ApexRaceParts View Post
Quote:
Originally Posted by R32DBP View Post
What would it take to run 18x9.5 all around? Different offsets? Also would like to run wide tires as well. I have a 335i M Sport with the M Sport brakes.
The F30 chassis does not lend itself to aggressive wheel/tire fitments, so the 18x9.5" square fitment would be quite difficult. Do you have adjustable camber plates up front? Also, what are you tire goals (brand & size)?

- Ryan
I do not have camber plates. Right now I'm on stock suspension but do plan on getting coils for the car. I currently have 19x 8.5/9.5 wheels now F/R with 245/275 tires. I would like to run 275 all around if possible with the 9.5s but I'm assuming I'd have to run staggered setup. I am trying to downsize to 18s for lighter wheels as well as more rim protection.

I'd like to run the 9.5 all around to have that deep concave look. But if staggered is the way to go then would 9/9.5 F/R work? I will most likely run continental DW tires as that's what I have now. They seem to be a good budget tire for daily use. I know the PSS would be ideal but for the money I thought the DW were enough for me. Thanks for any help!
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      11-30-2016, 05:10 PM   #14
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Quote:
Originally Posted by R32DBP View Post
I do not have camber plates. Right now I'm on stock suspension but do plan on getting coils for the car. I currently have 19x 8.5/9.5 wheels now F/R with 245/275 tires. I would like to run 275 all around if possible with the 9.5s but I'm assuming I'd have to run staggered setup. I am trying to downsize to 18s for lighter wheels as well as more rim protection.

I'd like to run the 9.5 all around to have that deep concave look. But if staggered is the way to go then would 9/9.5 F/R work? I will most likely run continental DW tires as that's what I have now. They seem to be a good budget tire for daily use. I know the PSS would be ideal but for the money I thought the DW were enough for me. Thanks for any help!
Appreciate the background info. 275 square does not make a lot of sense on this chassis, nor is it easy to accomplish without a track/race oriented alignment. For a purpose built track / race car, you are already dialing in some serious negative camber (lets say -3.5 degrees or so), and this helps tremendously with wheel/tire clearance to the front fenders. Track / race cars are built with one thing in mind - performance. Aggresive camber settings like this would not be ideal for street use, nor would it be warranted.

Since this is a street car, and based on the tires you mention I would guess it will not see any serious track time, I would recommend running a staggered fitment that is a bit more street friendly. By decreasing the wheel diameter from your current 19" wheels, you will significantly reduce rotating mass, as well as increase comfort and wheel protection due to the larger tire sidewalls. 245's or 255's are certainly doable up front with the right wheel specifications and alignment settings, but that is about as much tire as one would need under the front fenders for a street car. Thechange from 19's to light weight 18's and better tires will have a dramatic affect on how the car handles, feels and performs overall.

Furthermore, you do not need to run a 9.5" wheel to achieve the deep concave look. Our ARC-8 18x9" ET30 application has a profile 3 concave face, just like the 9.5" wheel.

What are your current wheel offsets?

- Ryan
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      12-01-2016, 10:03 AM   #15
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Quote:
Originally Posted by ApexRaceParts View Post
Appreciate the background info. 275 square does not make a lot of sense on this chassis, nor is it easy to accomplish without a track/race oriented alignment. For a purpose built track / race car, you are already dialing in some serious negative camber (lets say -3.5 degrees or so), and this helps tremendously with wheel/tire clearance to the front fenders. Track / race cars are built with one thing in mind - performance. Aggresive camber settings like this would not be ideal for street use, nor would it be warranted.

Since this is a street car, and based on the tires you mention I would guess it will not see any serious track time, I would recommend running a staggered fitment that is a bit more street friendly. By decreasing the wheel diameter from your current 19" wheels, you will significantly reduce rotating mass, as well as increase comfort and wheel protection due to the larger tire sidewalls. 245's or 255's are certainly doable up front with the right wheel specifications and alignment settings, but that is about as much tire as one would need under the front fenders for a street car. Thechange from 19's to light weight 18's and better tires will have a dramatic affect on how the car handles, feels and performs overall.

Furthermore, you do not need to run a 9.5" wheel to achieve the deep concave look. Our ARC-8 18x9" ET30 application has a profile 3 concave face, just like the 9.5" wheel.

What are your current wheel offsets?

- Ryan
My current wheel specs are listed:

Continental Extreme Contact DW Summer tires
19x8.5 et35 245/35-19
19x9.5 et43 275/30-19

After researching and thinking about it, you are right and it is probably not wise to run 275 all around on my car. It is my daily driver and I have another car that I use for the track anyways. I guess I just wanted a more aggressive look out of my daily and also be able to drive it hard if needed. I do like going on spirited drives around the mountains be me.

I am most likely looking at doing an 8.5/9.5 setup with 245/275 size tires again like I am running now. Maybe even go 255/275? Like you said, I am looking to downsize to get that extra rim protection but I would also like to keep the tire widths I have for handling purposes. Also, I don't want to stretch tires.

You're saying I can achieve the deep concave look from a 9" wheel as well so you think I can do 8.5/9 F/R? Or do you mean to say I should do 9" all around with maybe 255's all around? Ideally I would like to keep the 275's in the back because it just looks good from behind haha and if the only way to do that is with the 8.5/9.54 F/R then I am okay with that.

Again thank you for your help!

-Marco
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      12-07-2016, 04:24 PM   #16
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Quote:
Originally Posted by R32DBP View Post
My current wheel specs are listed:

Continental Extreme Contact DW Summer tires
19x8.5 et35 245/35-19
19x9.5 et43 275/30-19

After researching and thinking about it, you are right and it is probably not wise to run 275 all around on my car. It is my daily driver and I have another car that I use for the track anyways. I guess I just wanted a more aggressive look out of my daily and also be able to drive it hard if needed. I do like going on spirited drives around the mountains be me.

I am most likely looking at doing an 8.5/9.5 setup with 245/275 size tires again like I am running now. Maybe even go 255/275? Like you said, I am looking to downsize to get that extra rim protection but I would also like to keep the tire widths I have for handling purposes. Also, I don't want to stretch tires.

You're saying I can achieve the deep concave look from a 9" wheel as well so you think I can do 8.5/9 F/R? Or do you mean to say I should do 9" all around with maybe 255's all around? Ideally I would like to keep the 275's in the back because it just looks good from behind haha and if the only way to do that is with the 8.5/9.54 F/R then I am okay with that.

Again thank you for your help!

-Marco
Copy that. 245/275 is plenty of tire on this chassis, and would supply you with ample grip for mountain / canyon runs assuming you purchase good tires . The ARC-8 design does not come in the ideal specifications/offset for the rear of this car like our EC-7 design does. The EC-7 comes in an 18x9.5" ET43 (just like your current rear wheels), whereas the ARC-8 only comes in an 18x9.5" ET35. The lower offset of the ARC-8 would cause significant rubbing in the rear of your F30 with 275's. I would suggest going with the EC-7's, and running one of the following fitments:

Option 1:
EC-7 18x9" ET42 profile 1 face - 245/40-18 or 255/35-18
EC-7 18x9.5" ET43 profile 2 face - 275/35-18

^ Up front 245's are a direct fit, however 255's would require negative camber to clear the fenders and possibly some small spacers to clear the struts

or

Option 2:
EC-7 18x9" ET31 profile 2 face - 245/40-18
EC-7 18x9.5" ET43 profile 2 face - 275/35-18

^ This front wheel is more aggressive then the front wheel in option 1, and will require negative camber to fit without rubbing the front fenders.

- Ryan
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      05-16-2017, 05:37 PM   #17
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      06-22-2017, 01:56 PM   #18
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Question: what size would you recommend for a combination of the best lap times and fun to drive? I despise the current understeer. This will stay a street car with street tires that sees a few road course and auto cross events per year. Would +20 in the front and +10 in the rear do it (245 front and 265 rear) alone? Or would I need alignment adjustments as well to balance the car (reduce understeer) and if so would it be mild enough to not wear the tires out too fast on the street? I don't mind sacrificing a little wear life if I can minimize tire size but I wouldn't want any excessive wear.

18x9" ET30 and 18x9.5" ET22 for 245 front and 265 rear? looks like the stock front wheels are 22.5 lbs and the rears are 24.5 so the weight savings would be about -20 pounds or a 20% reduction. Not bad! Is this the size you would recommend?

How does it compare to the EC-7s in weight?

Last edited by GoKartZ4M; 06-22-2017 at 03:28 PM..
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      06-26-2017, 12:46 PM   #19
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Quote:
Originally Posted by GoKartZ4M View Post
Question: what size would you recommend for a combination of the best lap times and fun to drive? I despise the current understeer. This will stay a street car with street tires that sees a few road course and auto cross events per year. Would +20 in the front and +10 in the rear do it (245 front and 265 rear) alone? Or would I need alignment adjustments as well to balance the car (reduce understeer) and if so would it be mild enough to not wear the tires out too fast on the street? I don't mind sacrificing a little wear life if I can minimize tire size but I wouldn't want any excessive wear.

18x9" ET30 and 18x9.5" ET22 for 245 front and 265 rear? looks like the stock front wheels are 22.5 lbs and the rears are 24.5 so the weight savings would be about -20 pounds or a 20% reduction. Not bad! Is this the size you would recommend?

How does it compare to the EC-7s in weight?
Happy to assist with your questions, however before I dive into things I have a couple questions for you to ensure I supply you with the most accurate response/recommendation.

Are you currently running stock suspension?

Do you have adjustable camber plates?

- Ryan
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      07-10-2017, 06:24 PM   #20
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      07-26-2017, 05:10 PM   #21
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Concave ARC-8s and APEX wheel studs are a perfect combination.

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      07-31-2017, 05:26 PM   #22
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Low clearance? No problem.

These 18" Satin Black ARC-8s slide right over massive StopTech brakes.

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