Is anyone running a 255 front?

Polo08816 · 02-23-2016, 02:58 PM

Quote:

Originally Posted by mkallman

It still blows my mind that I couldn't fit 245/35R20 on the front of my car and I'm riding at stock ride height. Blows. My. Mind.

What part did not clear?

And what were the dimensions + offset of your wheels?

MickAv8r · 02-24-2016, 03:05 PM

Quote:

Originally Posted by mkallman

It still blows my mind that I couldn't fit 245/35R20 on the front of my car and I'm riding at stock ride height. Blows. My. Mind.

doesnt surprise me at all.

The stock wheel diameters hover around 26".

225/45/18 = 25.97"
255/40/18 = 26.03"

225/40/19 = 26.09"
255/35/19 = 26.03"

these all fit with no issues on the front.

Earlier in the thread somone posted they fit a

255/30/20 = 26.02" with no issues.

your fitment:

245/35/20 = 26.75"

Its not just widths and offsets but also aspect ratio and overall wheel diameter. If the wheel is tall the likelihood of rubbing is obviously there.

Polo08816 · 02-24-2016, 03:18 PM

Quote:

Originally Posted by MickAv8r

doesnt surprise me at all.

The stock wheel diameters hover around 26".

225/45/18 = 25.97"
255/40/18 = 26.03"

225/40/19 = 26.09"
255/35/19 = 26.03"

these all fit with no issues on the front.

Earlier in the thread somone posted they fit a

255/30/20 = 26.02" with no issues.

your fitment:

245/35/20 = 26.75"

Its not just widths and offsets but also aspect ratio and overall wheel diameter. If the wheel is tall the likelihood of rubbing is obviously there.

The tallest wheel/tire combo I've heard of people putting on the front is 245/45/18 which is about 26.6" tall. No one has gone over that. I have a 235/45/18 tire on the front right now for my winter tires and that has an overall diameter of 26.3". I think anything taller than a 245/45/18 would have fitment issues on the front. I use a 245/45/18 on my rears for my winter tires and they fit without issues. I wouldn't go any taller than that on the rears as well. You will feel sluggish acceleration due to the changed overall gearing.

MickAv8r is your front suspension stock? (xDrive or RWD)?

Polo08816 · 03-01-2016, 08:06 AM

It seems like 255/40/18 with 18x8.5 ET35 will clear. What about the same setup with the exception of the offset:

255/40/18 with 18x8.5 ET38

Basically, instead of Apex EC-7 in favor of Apex ARC-8? I'm hoping the margin of error on the setups tested above isn't just 3mm.

kzflags · 03-01-2016, 08:16 AM

Quote:

Originally Posted by Polo08816

It seems like 255/40/18 with 18x8.5 ET35 will clear. What about the same setup with the exception of the offset:

255/40/18 with 18x8.5 ET38

Basically, instead of Apex EC-7 in favor of Apex ARC-8? I'm hoping the margin of error on the setups tested above isn't just 3mm.

Dude that's perfectly fine. Unless you're running the m performance calipers, which they might not clear. 5mm spacer will do the trick

Polo08816 · 03-01-2016, 08:26 AM

Quote:

Originally Posted by kzflags

Dude that's perfectly fine. Unless you're running the m performance calipers, which they might not clear. 5mm spacer will do the trick

M Sport Brake Option...

Let me shoot APEX an email to verify.

Quote:

Brake Clearance - Barrel
A lot of room in a small space

Spoke clearance is only half the problem. The barrel opening on a wheel also needs to be big enough to clear the sides of your caliper and rotor. Not all 18" wheels are made equal though. APEX designed the ARC-8's barrel to open to it's largest diameter as early as possible. The sooner this happens and the wider it opens, the larger the brake kit you can fit. This is vital on 18" applications because without enough clearance, most larger diameter brake kits will almost certainly not fit behind typical wheels. Most 18" wheels on the market make aesthetic compromises to their design that consumers wouldn't even know have a major negative impact on barrel clearance. Those wheels may work with smaller stock brakes, or smaller diameter Big Brake Kits, but the larger kits will pose a major problem. We 2D modeled most Big Brake Kits available in Solidworks and altered the wheel design to clear as many kits as possible. Our 18" ARC-8 wheels can clear some 380mm kits, and everything smaller clears the barrel with ease. Contact us to confirm brake clearances for your specific application.

kzflags · 03-01-2016, 08:37 AM

Quote:

Originally Posted by Polo08816

M Sport Brake Option...

Let me shoot APEX an email to verify.

i think you are fine with the m sport brakes, the m performance calipers to my knowledge are wider and longer.

Polo08816 · 03-01-2016, 08:44 AM

Quote:

Originally Posted by kzflags

i think you are fine with the m sport brakes, the m performance calipers to my knowledge are wider and longer.

I think there's a bit of confusion regarding the M Sport Brake Option.

In 2012, the M Sport Brake option was basically a blue-painted caliper. I know for a fact that in 2014, it's different.

It uses a larger rotor 370x30mm instead of 340x30mm and both front and rear calipers were upgraded. The only difference between the M Sport Brake Option and the M Performance Brake kit is the rotors: blanks vs. slotted.

Also, there are 3 variations of the Michelin Pilot Super Sport 255/40/18 tires. They all have the same sectional width of 10.2" but they have different tread widths:

8.5"
9.2"
9.5"

I'll probably end up going with the 9.2" just for a measure of safety. The 8.5" is really narrow at the tread for a 255 tire. It's just as narrow as my 235/45/18 Michelin X-Ice Xi3 that I have on the front.

kzflags · 03-01-2016, 08:46 AM

Quote:

Originally Posted by Polo08816

I think there's a bit of confusion regarding the M Sport Brake Option.

In 2012, the M Sport Brake option was basically a blue-painted caliper. I know for a fact that in 2014, it's different.

It uses a larger rotor 370x30mm instead of 340x30mm and both front and rear calipers were upgraded. The only difference between the M Sport Brake Option and the M Performance Brake kit is the rotors: blanks vs. slotted.

ah yea I did read something about that too. I was going off of the turner website. you may run into clearance issues with the et38. a 3mm spacer will reduce your offsets to +35 effectively and will clear.

kzflags · 03-01-2016, 08:47 AM

and I only say that because I was reading a thread a few weeks ago when someone running the BBK had issues with a +38et

Polo08816 · 03-01-2016, 08:56 AM

Quote:

Originally Posted by kzflags

ah yea I did read something about that too. I was going off of the turner website. you may run into clearance issues with the et38. a 3mm spacer will reduce your offsets to +35 effectively and will clear.

Quote:

Originally Posted by kzflags

and I only say that because I was reading a thread a few weeks ago when someone running the BBK had issues with a +38et

This thread basically answered my question: http://f30.bimmerpost.com/forums/sho....php?t=1046570

Someone is running an 18x9 ET42 with a 5mm spacer and 265/35/18 tires. That setup is approximately 5mm closer to the inner strut than my hypothetical setup.

Short story: it's a tight fit (for the brakes).

Polo08816 · 03-02-2016, 08:32 PM

I ordered my APEX ARC-8 18x8.5" ET38 and Michelin 255/40/18 with the 9.2" tread width - square setup.

It'll probably take about 2 weeks before I receive it and get it mounted. I'll post some pics when it's done.

Michaelr42 · 03-04-2016, 07:04 PM

255/30ZR20 in front

obriennathaniel · 03-05-2016, 02:03 AM

It all depends on your offset and wheel width. I ran 245's on my 20x9.5 +35, im lowered so much that it rubs when i hit a bump but its nothing terrible. A 255 wouldnt fit though because it hits the strut.

Polo08816 · 03-07-2016, 08:42 AM

Quote:

Originally Posted by obriennathaniel

It all depends on your offset and wheel width. I ran 245's on my 20x9.5 +35, im lowered so much that it rubs when i hit a bump but its nothing terrible. A 255 wouldnt fit though because it hits the strut.

I'm thinking the wheel width and offset is the issue and not the tire width (245 vs. 255)...

Vitoco · 03-09-2016, 03:32 AM

Quote:

Originally Posted by mkallman

It still blows my mind that I couldn't fit 245/35R20 on the front of my car and I'm riding at stock ride height. Blows. My. Mind.

FYI I have been runnin a square 245/35R20x8.5 setup for 3 years now and had no problem. I have only seen some very slight rub on the front, most probably from full lock turns. Never heard or noticed it, just visually seen that some contact has been made when I´ve looked . Very little contact.

edit: I´m on stock height with the M Adaptive. Tires are MPSS

Polo08816 · 03-09-2016, 04:20 AM

Quote:

Originally Posted by Vitoco

FYI I have been runnin a square 245/35R20x8.5 setup for 3 years now and had no problem. I have only seen some very slight rub on the front, most probably from full lock turns. Never heard or noticed it, just visually seen that some contact has been made when I´ve looked . Very little contact.

edit: I´m on stock height with the M Adaptive. Tires are MPSS

What's your offset?

MPSS in 245/35/18 are 26.8" tall. The height is probably what is causing the rub. Stock height is 26.0".

Vitoco · 03-09-2016, 04:22 AM

Quote:

Originally Posted by Polo08816

What's your offset?

MPSS in 245/35/18 are 26.8" tall. The height is probably what is causing the rub. Stock height is 26.0".

ET35. Yes, the correct profile should be 245/30 for the 20". But I wanted some cushion for the tush

Polo08816 · 03-10-2016, 11:50 AM

Mounted and balanced by BMW of Annapolis...(Square setup)

APEX ARC-8 18x8.5 ET38 (Finish: Anthracite)
Michelin Pilot Super Sport 255/40/18

It fits. No rubbing.

MO_23 · 03-11-2016, 08:23 AM

Does anyone know if you can run a 255/40/19 on the front for an F32 with M sport suspension?

Polo08816 · 03-11-2016, 08:41 AM

Quote:

Originally Posted by MO_23

Does anyone know if you can run a 255/40/19 on the front for an F32 with M sport suspension?

http://www.tirerack.com/tires/tires....SSXL&tab=Specs

My guess is that a 255/40/19 would be way too tall. The total diameter is 27.1". OE diameter is 26.0".

The limit that comes up is about a 26.6" (245/45/18) and no further. 255/40/19 is both wider AND taller.

MO_23 · 03-11-2016, 08:46 AM

Quote:

Originally Posted by Polo08816

http://www.tirerack.com/tires/tires....SSXL&tab=Specs

My guess is that a 255/40/19 would be way too tall. The total diameter is 27.1". OE diameter is 26.0".

The limit that comes up is about a 26.6" (245/45/18) and no further. 255/40/19 is both wider AND taller.

just curious where do you find the limit of 26.6? and thank you!

03-01-2016, 08:06 AM	#70
Polo08816 Brigadier General 1610 Rep 3,946 Posts Drives: 2014 335i M Sport Join Date: Sep 2010 Location: MD iTrader: (0)	It seems like 255/40/18 with 18x8.5 ET35 will clear. What about the same setup with the exception of the offset: 255/40/18 with 18x8.5 ET38 Basically, instead of Apex EC-7 in favor of Apex ARC-8? I'm hoping the margin of error on the setups tested above isn't just 3mm.
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03-01-2016, 08:47 AM	#76
kzflags First Lieutenant 95 Rep 338 Posts Drives: 2017 C63 coupe Join Date: Dec 2013 Location: Central NJ iTrader: (1)	and I only say that because I was reading a thread a few weeks ago when someone running the BBK had issues with a +38et
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03-02-2016, 08:32 PM	#78
Polo08816 Brigadier General 1610 Rep 3,946 Posts Drives: 2014 335i M Sport Join Date: Sep 2010 Location: MD iTrader: (0)	I ordered my APEX ARC-8 18x8.5" ET38 and Michelin 255/40/18 with the 9.2" tread width - square setup. It'll probably take about 2 weeks before I receive it and get it mounted. I'll post some pics when it's done.
	Appreciate 0 Quote

03-04-2016, 07:04 PM	#79
Michaelr42 MichaelR42 1 Rep 5 Posts Drives: 2013 328i F30 sedan Join Date: Mar 2016 Location: Dana point, Ca iTrader: (0)	meeee 255/30ZR20 in front Attached Images
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03-05-2016, 02:03 AM	#80
obriennathaniel @obriennathaniel_f30 on Instagram 515 Rep 1,063 Posts Drives: 582whp/596wtq '13 335i Join Date: Jan 2014 Location: Houston,Tx ig:obriennathaniel_f30 iTrader: (0)	It all depends on your offset and wheel width. I ran 245's on my 20x9.5 +35, im lowered so much that it rubs when i hit a bump but its nothing terrible. A 255 wouldnt fit though because it hits the strut. __________________ CG Precision VS-1 Exhaust\DR-1 DownPipe \| PS2 Turbo\Inlet \| PDU PI w/Fuel-it platinum kit & E sensor \| GFB DV+ Diverter Valve \| BM3 w/AIC2-V\|Tune CaryTheLabelGuy \| Full E85 \| ATM FMIC \| ER Chargepipe Inlet/Outlet \| AFE Intake \| BC Coilovers \| PSS 255/40-275/35 Velos Designwerks S3 two piece 19x9/19x10 \| Osram Xenarc \| LED retro \| AWRON digital AC gauge\|
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03-10-2016, 11:50 AM	#85
Polo08816 Brigadier General 1610 Rep 3,946 Posts Drives: 2014 335i M Sport Join Date: Sep 2010 Location: MD iTrader: (0)	Mounted and balanced by BMW of Annapolis...(Square setup) APEX ARC-8 18x8.5 ET38 (Finish: Anthracite) Michelin Pilot Super Sport 255/40/18 It fits. No rubbing. Attached Images Last edited by Polo08816; 03-10-2016 at 12:34 PM..
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03-11-2016, 08:23 AM	#86
MO_23 Private First Class 80 Rep 184 Posts Drives: 435i ENZO Join Date: Aug 2015 Location: NY iTrader: (0)	Does anyone know if you can run a 255/40/19 on the front for an F32 with M sport suspension?
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