Square wheels

DRLane · 08-25-2021, 06:00 PM

Quote:

Originally Posted by RSXDC5

Quote:

Originally Posted by DRLane

Quote:

Originally Posted by RSXDC5

Quote:

Originally Posted by DRLane

Quote:

Originally Posted by RSXDC5

Stupidest wheel setup ever with a 41mm spacer. I don't care if it's bmw or Joe Schmo…41mm is wildly excessive to enable tire rotations. The car clearly needs different spec'd front and rear wheels.

These are professional race teams running slicks in all sorts of conditions and race formats. I doubt they're doing it for tire rotation and I would trust their car setup capabilities over the forum's consensus.

Edit: Just spoke with buddy that's very familiar with M2CSR and the whole front suspension is unique to pull the spindle inward. This won't be replicable easily in the street M's.

Rotation was probably the wrong word to use. I mean that teams would have the ability to throw on one of their wheels/tires on either the front or rear by using the massive front spacer…the spacer is the crutch that allows this to occur. It allows this at the expense of improper wheel fitment, massive scrub radius increases, and added wheel bearing stress.

Ideally, the front wheels would have their own unique offset/width compared to the rear. If you need to shorten suspension arms and add wild spacers, you are making compromises FOR A REASON, as stated above.

Again, the whole front suspension is unique. It's not an apples comparison. I was wrong to share those details regarding the Fall Line car.

Nonetheless, I'd still argue professional tean engineers and BMW GT4 engineers are more competent than the forum as to whether there are compromises here.

It's not an issue of competency my friend, it's about compromises. You are sacrificing max wheel fitment (and unique f/r wheel specs) for the ability to use a squared setup (enabled by spacers).

If you want max grip (via dialed-in tire width and offset) from the front and rear suspension, you need a non squared non rotate able setup.

I hear you. I'm saying these teams don't make decisions where the benefits don't outweighs the consequences. I assume they're prioritizing mechanical grip over rotatable setups and thus the desire is the largest possible front wheel possible.

AWC-F87 · 08-28-2021, 03:16 PM

Fenders are rolled! Now I just need to ceramic coat the APEX wheels and we will be rolling square with clearance everywhere.
I know some of you said this wasn't necessary but it's an extra level of safety.

AWC-F87 · 08-29-2021, 08:56 PM

Alright guys! Finally got to run the car!

Soo! This is MY OPINION.

But from everything I've discussed here and figured out on this journey here's the recipe to make 18x10et33 square fit properly with NT01 275/35/18 tires.

I'm running kw clubsports with a 5.5" 60mm 10kg or 572 lbs per inch front spring with the perches high. Camber plates are maxed out to the negative. I won't know until I align the car again but I'm guessing around -3.8 to -4

12.5mm wheel spacers.

Rolled fenders.

Ran the car hard in the canyons and it only rubbed on harsh dips that compressed the suspension. Turning and everything else seemed fine.

Really hoping this nets me the ability to rotate tires and evenly wear them out. That was my goal going down this path to begin with.

I know some of you have said I didn't need to do this or that. But this is how I feel it's best set up to clear everywhere and I'm glad I did it my OCD way.

OG Shark · 08-30-2021, 11:39 AM

Quote:

Originally Posted by AWC-F87

Alright guys! Finally got to run the car!

Soo! This is MY OPINION.

But from everything I've discussed here and figured out on this journey here's the recipe to make 18x10et33 square fit properly with NT01 275/35/18 tires.

I'm running kw clubsports with a 5.5" 60mm 10kg or 572 lbs per inch front spring with the perches high. Camber plates are maxed out to the negative. I won't know until I align the car again but I'm guessing around -3.8 to -4

12.5mm wheel spacers.

Rolled fenders.

Ran the car hard in the canyons and it only rubbed on harsh dips that compressed the suspension. Turning and everything else seemed fine.

Really hoping this nets me the ability to rotate tires and evenly wear them out. That was my goal going down this path to begin with.

I know some of you have said I didn't need to do this or that. But this is how I feel it's best set up to clear everywhere and I'm glad I did it my OCD way.

Well done! Glad you did it your way - no better way to do it! I might be joining you soon too on my M2C when we try to stuff 11s in the back

We need more pics of the whole car now!

Doublej · 08-30-2021, 12:20 PM

Quote:

Originally Posted by AWC-F87

Alright guys! Finally got to run the car!

Soo! This is MY OPINION.

But from everything I've discussed here and figured out on this journey here's the recipe to make 18x10et33 square fit properly with NT01 275/35/18 tires.

I'm running kw clubsports with a 5.5" 60mm 10kg or 572 lbs per inch front spring with the perches high. Camber plates are maxed out to the negative. I won't know until I align the car again but I'm guessing around -3.8 to -4

12.5mm wheel spacers.

Rolled fenders.

Ran the car hard in the canyons and it only rubbed on harsh dips that compressed the suspension. Turning and everything else seemed fine.

Really hoping this nets me the ability to rotate tires and evenly wear them out. That was my goal going down this path to begin with.

I know some of you have said I didn't need to do this or that. But this is how I feel it's best set up to clear everywhere and I'm glad I did it my OCD way.

Nice! Grats! I know above somewhere you estimated roughly a 1/2" lower than stock. Do you have a target ride height in mind for the alignment?

My car just went in for an alignment after an MCS and a few other suspension bits. I also have the EC-7 18x10 ET33s. My front ride height will be 600mm (stock is 620), front camber -3.1 and I'll have a 12mm spacer.

This was the pre-alignment at roughly 601mm height. Not sure on camber but I would say roughly around the -3 mark, maybe a touch more.

I'll post-alignment pics once I have the car back.

AWC-F87 · 09-11-2021, 09:48 PM

Here's some pics guys

evilspiritM3 · 09-12-2021, 10:05 AM

Quote:

Originally Posted by AWC-F87

Here's some pics guys

Rear spacers?

AWC-F87 · 09-12-2021, 11:04 AM

Quote:

Originally Posted by evilspiritM3

Quote:

Originally Posted by AWC-F87

Here's some pics guys

Rear spacers?

None. Just 12.5 upfront

mcvaughan · 09-12-2021, 11:25 AM

Quote:

Originally Posted by AWC-F87

Here's some pics guys

Looks perfect. 😎

AWC-F87 · 09-12-2021, 12:14 PM

Quote:

Originally Posted by mcvaughan

Quote:

Originally Posted by AWC-F87

Here's some pics guys

Looks perfect. 😎

Thank you!! With a little wiggle room for the hard track days.

MrLizzzard · 10-31-2021, 10:50 AM

Quote:

Originally Posted by AWC-F87

Thank you!! With a little wiggle room for the hard track days.

glad you got it sorted, looks ace

OG Shark · 12-01-2021, 08:17 PM

Not running a square setup - but the front is one of the effective offsets & tires sizes being run now. 18x10 ET21 with a Hoosier A7 275/35/18 on it (and they run wide at that). Tucks in nicely in track trim (-3.5 camber). I run an 11" wheel in the back with 295/30/18's on it but I can definitely see where a square 10" ET33 would be a great setup.

3LiterBeater · 12-02-2021, 01:21 PM

Quote:

Originally Posted by OG Shark

Not running a square setup - but the front is one of the effective offsets & tires sizes being run now. 18x10 ET21 with a Hoosier A7 275/35/18 on it (and they run wide at that). Tucks in nicely in track trim (-3.5 camber). I run an 11" wheel in the back with 295/30/18's on it but I can definitely see where a square 10" ET33 would be a great setup.

What're these wheels? Haven't seen them before.

Anonymoose · 12-02-2021, 01:55 PM

Just rolled back in from the alignment.

275/35/18 Goodyear Supercar 3's on a square ET33 18x10 wheel with front camber @ -3.2 and rear @ -1.8 on ohlins road and track with 3dm suspension swift springs I am able to clear the fender without any issues.

The shop said I have plenty of clearance on my setup that I do not need to roll the fenders.

08-28-2021, 03:16 PM	#156
AWC-F87 Lieutenant 437 Rep 485 Posts Drives: 2018 BMW M2 Join Date: Dec 2019 Location: Thousand Oaks CA iTrader: (1)	Fenders are rolled! Now I just need to ceramic coat the APEX wheels and we will be rolling square with clearance everywhere. I know some of you said this wasn't necessary but it's an extra level of safety. Attached Images
	Appreciate 1 Rundskop148.00 Quote

08-29-2021, 08:56 PM	#157
AWC-F87 Lieutenant 437 Rep 485 Posts Drives: 2018 BMW M2 Join Date: Dec 2019 Location: Thousand Oaks CA iTrader: (1)	Alright guys! Finally got to run the car! Soo! This is MY OPINION. But from everything I've discussed here and figured out on this journey here's the recipe to make 18x10et33 square fit properly with NT01 275/35/18 tires. I'm running kw clubsports with a 5.5" 60mm 10kg or 572 lbs per inch front spring with the perches high. Camber plates are maxed out to the negative. I won't know until I align the car again but I'm guessing around -3.8 to -4 12.5mm wheel spacers. Rolled fenders. Ran the car hard in the canyons and it only rubbed on harsh dips that compressed the suspension. Turning and everything else seemed fine. Really hoping this nets me the ability to rotate tires and evenly wear them out. That was my goal going down this path to begin with. I know some of you have said I didn't need to do this or that. But this is how I feel it's best set up to clear everywhere and I'm glad I did it my OCD way.
	Appreciate 3 just blaze310.00 OG Shark4685.50 Rundskop148.00 Quote

09-11-2021, 09:48 PM	#160
AWC-F87 Lieutenant 437 Rep 485 Posts Drives: 2018 BMW M2 Join Date: Dec 2019 Location: Thousand Oaks CA iTrader: (1)	Here's some pics guys Attached Images
	Appreciate 5 mcvaughan704.00 Rundskop148.00 MrLizzzard11.50 Fabb227.50 Sungillest101.50 Quote

12-01-2021, 08:17 PM	#166
OG Shark BimmerPost Supporting Vendor 4686 Rep 2,538 Posts Drives: Angry Join Date: Oct 2014 Location: Spring Branch, TX iTrader: (5)	Not running a square setup - but the front is one of the effective offsets & tires sizes being run now. 18x10 ET21 with a Hoosier A7 275/35/18 on it (and they run wide at that). Tucks in nicely in track trim (-3.5 camber). I run an 11" wheel in the back with 295/30/18's on it but I can definitely see where a square 10" ET33 would be a great setup. __________________ @teamogshark https://ogsharkmotorsport.com/
	Appreciate 1 mcvaughan704.00 Quote

12-02-2021, 01:55 PM	#168
Anonymoose Lieutenant 532 Rep 484 Posts Drives: BMW M2C Join Date: May 2021 Location: WNC iTrader: (1)	Just rolled back in from the alignment. 275/35/18 Goodyear Supercar 3's on a square ET33 18x10 wheel with front camber @ -3.2 and rear @ -1.8 on ohlins road and track with 3dm suspension swift springs I am able to clear the fender without any issues. The shop said I have plenty of clearance on my setup that I do not need to roll the fenders.
	Appreciate 1 aatlas192.00 Quote

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