[carseatdelete]

Originally Posted by Aldor27

255/40/18 square with Michelin Pilot sport 4s. On Swift lowering springs and a tiny bit of sidewall pokes out.

Hi Aldor27

Pics look great. I just ordered Apex FL-5 18x9 ET30. Planning to put Conti DWS06 on: 255/40/18 square.

Can you confirm your wheel specs?

Thanks!

[Aldor27]

Originally Posted by carseatdelete

Hi Aldor27

Pics look great. I just ordered Apex FL-5 18x9 ET30. Planning to put Conti DWS06 on: 255/40/18 square.

Can you confirm your wheel specs?

Thanks!

Yeah same specs as yours, Apex Arc-8 18x9 ET30 with MPS4S 255/40/18 squared.

[Sedds]

Originally Posted by carseatdelete

Hi Aldor27

Pics look great. I just ordered Apex FL-5 18x9 ET30. Planning to put Conti DWS06 on: 255/40/18 square.

Can you confirm your wheel specs?

Thanks!

Can you post pics when you get them? This thread is super helpful. Pretty sure I'm eventually going with the EC-7 or Fl-5 in 18x9. Can't decide! Have spent hours reading and researching. This is definitely helpful for tire size, as the Apex website doesn't inspire a lot of confidence with these fitments. Planning on HR sports in the near future, or possibly KW coils... most likely HR sports for now though.

[Aldor27]

Originally Posted by Sedds

Can you post pics when you get them? This thread is super helpful. Pretty sure I'm eventually going with the EC-7 or Fl-5 in 18x9. Can't decide! Have spent hours reading and researching. This is definitely helpful for tire size, as the Apex website doesn't inspire a lot of confidence with these fitments. Planning on HR sports in the near future, or possibly KW coils... most likely HR sports for now though.

If you go on Apex's Gallery, they have a picture of two of my fitment. I'll get some pics tomorrow.

[carseatdelete]

Originally Posted by Aldor27

Yeah same specs as yours, Apex Arc-8 18x9 ET30 with MPS4S 255/40/18 squared.

Cool, thanks.

[alecdegregorio]

Originally Posted by Aldor27

Liking the fitment, glad I can now rotate my tires and fit 255/40/18s up front.

might be a stupid question but i have a 335 with x drive, would that affect running 255s in the front any different?

[Aldor27]

Originally Posted by alecdegregorio

might be a stupid question but i have a 335 with x drive, would that affect running 255s in the front any different?

No, as long as it's within 1% size difference.

[TheJungatron]

Originally Posted by Aldor27

Yeah same specs as yours, Apex Arc-8 18x9 ET30 with MPS4S 255/40/18 squared.

you are saying ET30 but when I see the fitment guide they sat 35-38...

did you use the fitment guide or just order them at a et30?

Thanks!

[Stlblues]

Originally Posted by Jungatron

you are saying ET30 but when I see the fitment guide they sat 35-38...

did you use the fitment guide or just order them at a et30?

Thanks!

Apex fitment guide lists the 18X8.5 +38 as a sort of no hassles fitment. They list 18X9 +30 as an "aggressive fitment" but go on to acknowledge they will fit with 245/40-18 tires with no rubbing. They may also fit with 255/40-18 with no problems, depending on your suspension set up. Personally, I am on Dinan springs and have run both tire sizes and had a slight rub in the back on compression when people were in the back seat, but my one fender liner is kind of shaped funny which may have been the cause. I have zero rubbing on the 245s.

[Logicoeur]

I'm currently on 18x9 et 32 with 255/40/18 and no running at all. Not when I was stock xdrive and not now when I am lowered 1" all around. I can turn lock to lock with no running as well. My coilovers use linear springs so they are not as wide as the progressive springs on KW suspension, or OE.

[Aldor27]

Originally Posted by Jungatron

you are saying ET30 but when I see the fitment guide they sat 35-38...

did you use the fitment guide or just order them at a et30?

Thanks!

Like the guy above me said, it's their no hassle fitment. ET30 is aggressive and doable but it depends on your suspension setup.

[ssjelf]

Originally Posted by Aldor27

Like the guy above me said, it's their no hassle fitment. ET30 is aggressive and doable but it depends on your suspension setup.

Think 255/40/18 will work on 18x9 ET30 on a stock Msport, RWD? No lowering or anything.

Or would I need to dial in camber or go with a different coilover?

[Aldor27]

Originally Posted by ssjelf

Think 255/40/18 will work on 18x9 ET30 on a stock Msport, RWD? No lowering or anything.

Probably should, You'll just have some wheel gap.

[ssjelf]

Originally Posted by Aldor27

Probably should, You'll just have some wheel gap.

Wheel gap? Like on the front? I dont mind the way it looks now tbh. I think it will be slightly more filled if anything. Will deal with lowering later if I want, but brakes and power first

I posted another thread about putting 255s on my 8 inch 400Ms while I wait for my arc 8s. Need new tires because one has a bulge is cracking. I know you shouldnt put a 255 on an 8 inch wheel, but think it would clear? Would be very temporary.

[obzen]

I was about to pull the trigger on ec7s but now this thread is making me reconsider arc8s ET30 square 255/40/18

I'm on stock m suspension RWD on a 440 GC.

Anyone have any insight if this will rub for sure ?

I ve read mixed reviews about the fender liners being same sizes as the F30 vs F36

[F30FoxCat]

Originally Posted by obzen

I was about to pull the trigger on ec7s but now this thread is making me reconsider arc8s ET30 square 255/40/18

I'm on stock m suspension RWD on a 440 GC.

Anyone have any insight if this will rub for sure ?

I ve read mixed reviews about the fender liners being same sizes as the F30 vs F36

Very similar setup and situation. What about running the ET42 square setup? Not too familiar with how offsets affect the wheels for day to day driving.

[Stlblues]

I believe the +42 are either very close or will rub the struts in front. I think Apex says a small spacer (3 or 5mm) is required in the front. For confirmation I recommend reviewing the fitment sections on their website or call them and ask.

[Expert@ApexWheels]

Originally Posted by obzen

I was about to pull the trigger on ec7s but now this thread is making me reconsider arc8s ET30 square 255/40/18

I'm on stock m suspension RWD on a 440 GC.

Anyone have any insight if this will rub for sure ?

I ve read mixed reviews about the fender liners being same sizes as the F30 vs F36

From what I’ve seen, the fender liners on the F36 aren’t dramatically different to the point where different offsets or tire sizes are required. 255/40-18 seems to work well for a variety of f3x customers running all-seasons or street tires, but wider tires can cause that setup to rub which is why 245/40-18 is our default recommendation.

This customer ran 18x9 ET30 front with 255/40-18 Michelin PSS & eibach lowering springs:

Owner IG: @htemup_b58, no rubbing reported

EC-7s and ARC-8s will be largely similar in terms of fitment, the 18x9 EC-7s have an ET31 offset, but this only shifts them inward by 1mm compared to our other wheels.

Originally Posted by F30FoxCat

Very similar setup and situation. What about running the ET42 square setup? Not too familiar with how offsets affect the wheels for day to day driving.

Originally Posted by Stlblues

I believe the +42 are either very close or will run the struts in front. I think Apex says a small spacer (3 or 5mm) is required in the front. For confirmation I recommend reviewing the fitment sections on their website or call them and ask.

Stlblues is correct, ET42 shifts the wheel inward by 12mm compared to the 18x9 ET30 wheels showcased by various posts on this thread. This means the wheels aren’t as flush and the higher offset generally requires a front spacer as well.

Most cars with stock suspension need a 3-5mm spacer depending on the tire they choose. I don’t recommend the ET42 for any car running Coilovers or HAS kits that limit inner clearance around the front struts.

18x9 ET30 (or ET31) has become the default 9” setup that we recommend as it works square without spacers. ET42 can be done but it generally makes the fitment slightly more complex with little added benefit.

-Tom

[snifflz]

Originally Posted by Expert@ApexRaceParts

From what I’ve seen, the fender liners on the F36 aren’t dramatically different to the point where different offsets or tire sizes are required. 255/40-18 seems to work well for a variety of f3x customers running all-seasons or street tires, but wider tires can cause that setup to rub which is why 245/40-18 is our default recommendation.

This customer ran 18x9 ET30 front with 255/40-18 Michelin PSS & eibach lowering springs:

Owner IG: @htemup_b58, no rubbing reported

EC-7s and ARC-8s will be largely similar in terms of fitment, the 18x9 EC-7s have an ET31 offset, but this only shifts them inward by 1mm compared to our other wheels.



Stlblues is correct, ET42 shifts the wheel inward by 12mm compared to the 18x9 ET30 wheels showcased by various posts on this thread. This means the wheels aren’t as flush and the higher offset generally requires a front spacer as well.

Most cars with stock suspension need a 3-5mm spacer depending on the tire they choose. I don’t recommend the ET42 for any car running Coilovers or HAS kits that limit inner clearance around the front struts.

18x9 ET30 (or ET31) has become the default 9” setup that we recommend as it works square without spacers. ET42 can be done but it generally makes the fitment slightly more complex with little added benefit.

-Tom

So I just ordered ARC8189ET30-5120-7256-T-HS square setup for my 2016 F30 w/ MP4S in 255/40/18. I’m on a B12 Pro kit with Eibach springs. I’m gonna be fine, right?

Also… when do they ship? It says Mid-July ETA does that mean ETA to my door in ~10 days?

Thanks!

[Expert@ApexWheels]

Originally Posted by snifflz

So I just ordered ARC8189ET30-5120-7256-T-HS square setup for my 2016 F30 w/ MP4S in 255/40/18. I’m on a B12 Pro kit with Eibach springs. I’m gonna be fine, right?

Also… when do they ship? It says Mid-July ETA does that mean ETA to my door in ~10 days?

Thanks!

B12 pros don't limit inner clearance like a HAS kit or other kit with height adjustability so you'll likely be fine, but clearances are tighter with the 255/40-18s. 245/40-18 is still our default recommendation for a guaranteed direct fit.

Eta listed on our site is a prediction for when the wheels arrive at our warehouse. Time spent shipping to the end customer is additive to that and will vary depending on your location. The wheels ship out of California and UPS Ground shipments take longer the further away you are. Map for a rough idea of shipping timelines can be found on this page: https://apexwheels.com/customer-support/faq

-Tom

[Polo08816]

Originally Posted by itsrichierich

Awesome setup! I am too looking at Arc8s in 18x9. Since you fitted 245/40, I might go the 255/40 route.

+1.

With 18x9, I would go the 255/40 route. Keeps your speed accurate to the factory calibration and has slightly more sidewall for a better ride.

[Stlblues]

Originally Posted by Polo08816

+1.

With 18x9, I would go the 255/40 route. Keeps your speed accurate to the factory calibration and has slightly more sidewall for a better ride.

As long as you know you might have some rubbing depending on tire tread with, fender liner shape, etc. I started with 255/40 but encountered some rubbing. I switched to 245/40 and the rubs are gone.