Z4 M Apex ARC-8 Wheels have arrived!

[kennyfrc]

Originally Posted by MakoBimmer1

I absolutely love the finish! The hyperblack can look dark in low lighting and brighter depending on the angle of the light hitting the wheels. As you can see in the closeup of my wheel, the sun is hitting the wheel at an angle so one side looks dark and the other side a brighter silver. The finish is top notch and I am getting a lot of compliments!
--

What size tires are you using front and rear?

[MakoBimmer1]

Originally Posted by kennyfrc

What size tires are you using front and rear?

265R and 235F. Love em!
--Chad

[kennyfrc]

Originally Posted by HAWKEYEHEP

Both cars look great. I have 8.5x18 front and 9.5x18 rear ARC 8's in hyperblack on my 06 Z4M roadster. I'm totally pleased with them and would recommend them to anyone who likes the look they offer. Best bang for the buck I found.Attachment 402725

Attachment 402726

Attachment 402727

What tire sizes are you running?

[Erhan]

Couldn't take a good pic yet. Hankook V12 tires.

Front: 18x9, 245/40
Rear: 18x9.5, 265/40

[Blind32]

^ That looks Great!

[SmartBastard]

Is anyone running 285/35/18 on the rear with R18x10? Would it be too much?

Tire calculator is saying that 285 would match the original size even better ...

Specification  Sidewall  Radius  Diameter  Circumference  Revs/Mile  Difference
255/40-18         4.0in  13.0in    26.0in         81.8in        775        0.0%
275/35-18         3.8in  12.8in    25.6in         80.4in        788       -1.7%
285/35-18         3.9in  12.9in    25.9in         81.2in        780       -0.7%

[Eddy@ApexWheels]

Originally Posted by SmartBastard

Is anyone running 285/35/18 on the rear with R18x10? Would it be too much?

Tire calculator is saying that 285 would match the original size even better ...

Specification  Sidewall  Radius  Diameter  Circumference  Revs/Mile  Difference
255/40-18         4.0in  13.0in    26.0in         81.8in        775        0.0%
275/35-18         3.8in  12.8in    25.6in         80.4in        788       -1.7%
285/35-18         3.9in  12.9in    25.9in         81.2in        780       -0.7%

The width would be the concern. It could be made to work, but it would depend on the tire and what is done to the car. If it were a Nitto NT-05 or Hankook RS-3 there would be a high likely hood of an issue just bolted on since it's taller than a 275/35 which many have experience with, and it's wider as well (both height and width impact fender clearance as you move out). added negative camber or a rear fender roll would probably be enough, but there could also be clearance issues on the inside rear requiring a spacer, which in turn will be an issue on the fender side.

I would not recommend it to anyone afraid of doing all that is needed to make it work.

[SmartBastard]

Originally Posted by paintpro21

The width would be the concern. It could be made to work, but it would depend on the tire and what is done to the car. If it were a Nitto NT-05 or Hankook RS-3 there would be a high likely hood of an issue just bolted on since it's taller than a 275/35 which many have experience with, and it's wider as well (both height and width impact fender clearance as you move out). added negative camber or a rear fender roll would probably be enough, but there could also be clearance issues on the inside rear requiring a spacer, which in turn will be an issue on the fender side.

I would not recommend it to anyone afraid of doing all that is needed to make it work.

Thanks for the input, I guess I'll go for 9" and 245 in front and 9.5" and 275 in rear then .. they are also lighter than the 10" by a bit.

[asirvr4]

my z4m coupe is stock.. i will install the following size:

front: 18x9 245/40/18
rear: 18x10 275/35/18

i am not going to lower the car anytime soon.. can anyone help me with the camber settings? do i need to change anything??

[kennyfrc]

Hyperblack ARC-8

Front 18X9-42 with Michelin PSS 245/40

Rear 18X10-25 with Michelin PSS 275/35

[kennyfrc]

more

[seank]

Does anyone have pics of the arc 8 squared set-up 18 x 10 on the z4m? Or does this set-up not fit with this particular wheel?

[Eddy@ApexWheels]

Originally Posted by seank

Does anyone have pics of the arc 8 squared set-up 18 x 10 on the z4m? Or does this set-up not fit with this particular wheel?

18x10's do not fit up front. You could fit 18x9.5" ET35 up front but camber plates will be required as even 245 tires will need 2.5 degrees~. 265's would need even more.

[asirvr4]

i fitted them and dont have any problems... thier light weight are amazing.. u could feel it from accelerating from 1st

[S2000]

Originally Posted by Eddy@ApexRaceParts

18x10's do not fit up front. You could fit 18x9.5" ET35 up front but camber plates will be required as even 245 tires will need 2.5 degrees~. 265's would need even more.

Eddy,
I would like to upgrade to this new set of Apex wheels and want to achieve your setup of 265/35 on 18x9.5 et35 in the front.
I would like to know the front ride height setting (measured from bottom rim to fender line) and spacer size. Please advise

You said it fits Pilot sport cup 265/35/18 (which has section width of 10.9", diameter of 25.2"). I want to do sanity check whether it will rub on my track application.

Currently, with either Nitto NT01 or Star Spec 245/40 tires (which has section width 9.8", diameter of 25.7") on 18x8.5" et 38 with front ride height set at 23.5" , -3.5 degree camber on KW Clubsport. It rubs the inner fender liner under extreme compression (coming down from a banked curve at >90mph, on race track) .


In prior experiment, I tried increasing the vertical clearance by using smaller diameter tire, so I tried mounting Hoosier 255/35 (section width of 10.8" [as wide as your 265/35], diameter of 25.1"). The 18x8.5 ET 38 offset is too high such that the tire sidewall is touching the KW shock perch.
The Apex 18x9.5 ET 35 could provide extra 3mm + spacer width (if used) inner clearance to the shock perch (relative to my current ET 38) so it may clear the KW shock perch.

However the 265/35 tire section width is 1" wider than the rubbing 245/40. So the 265/35 tire will stick out at least 0.5" + (spacer width) more than 245/40. If my front suspension compresses as far as it did with current 245/40 , it would rub at location 0.5" + (spacer width) further out which may be hitting the fender itself or the front bumper connection to the fender (see the picture). While the 265/35 diameter provides extra 0.25" vertical clearance, the possible contact/rub point has moved to the fender itself which is closer to the tire than the plastic fender liner.

Therefore, before I get the Apex wheels, I would like to understand the front ride height, spacer and front spring rate settings that allows 265/35 to fit in the front with no rubbing.
Thanks

[seank]

That is a lot of information. Not sure if it answers your question but I have 265/35-18 starspecs on 18x9.5 squared and do not rub on track with 3.3 degrees of camber in the front. I am running a 5mm spacer to clear stoptechs's. I am at the track in a different car, otherwise I would measure the front ride height for you.

[OneManParty]

Originally Posted by Eddy@ApexRaceParts

18x10's do not fit up front. You could fit 18x9.5" ET35 up front but camber plates will be required as even 245 tires will need 2.5 degrees~. 265's would need even more.

Only mod to clear the 18x9.5 et 35 square without any issues are camber plates? don't have to get coils?

[ApexWheels]

Originally Posted by OneManParty

Only mod to clear the 18x9.5 et 35 square without any issues are camber plates? don't have to get coils?

The stock strut’s integrated lower spring perch can clear the 265 setup, so a simple camber plate install with at least -2.5 degrees of camber can make the set up work. Times where you may run into trouble is when a KW V series or any other coilover kit that utilizes a cone shaped progressive spring is used a spacer may be needed to clear to spring. You are then pushing the wheel/tire out further requiring more camber.

[itdnwiwbp]

Here are some pics of my new setup. TC Klein Smart Design D/A Coilovers & Camber Plates, Hyper Black APEX ARC-8 18x9.5et35 18x10et25 & lug stud conversion, Michelin PSS 255/35 front 275/35 rear, Turner front adjustable sway bar end links.

It has -2.9 camber and 1.5mm toe-in in the front, -2.4 3mm toe-in in the rear and is corner balanced.

[drbvac]

Kenny FRC:

Front 18X9-42 with Michelin PSS 245/40

Rear 18X10-25 with Michelin PSS 275/35

Did you have to adjust any settings for alignment or camber with these size wheels and tires >??

[Platinum Child]

Have apexs on my m3 right now, love them.

[eruiz]

Originally Posted by itdnwiwbp

Here are some pics of my new setup. TC Klein Smart Design D/A Coilovers & Camber Plates, Hyper Black APEX ARC-8 18x9.5et35 18x10et25 & lug stud conversion, Michelin PSS 255/35 front 275/35 rear, Turner front adjustable sway bar end links.

It has -2.9 camber and 1.5mm toe-in in the front, -2.4 3mm toe-in in the rear and is corner balanced.

Man I really like the look of your car, I´ve imagine the hyperblack was going to look darker, Im buying the ARC 8 too and I was thinking hyper silver, but now I changed my mind!