BMW M4 GTS M Carbon Compound Wheels options announced!

[arsenalrocks]

gt350r only
19''x11 weights about 16lbs

Originally Posted by M3 Esq

Wow about time BMW gets on board. Aren't CF wheels already available on the new Mustang? These look sick.

[ASAP]

I mean the carbon portion looks good but the design of the wheel looks like the base 320i wheel... they look terrible imho.

[PARTSFROMERIK]

Originally Posted by W12x

Not sure about the wheel only price, but the CF wheels standard equipment on the GT350R (part of the R package that sets the GT350R apart from GT350), and the car cost $62K before dealer mark up...and I think current markup for the R is about $20-25K

I had a buddy buy them at ford and the cost of the wheels with tax came out to 32k...

[CanAutM3]

Originally Posted by FilipMPower

Dont forget, its rotating mass and unsprung weight! The brakes will also perform significantly better as they dont have to brake the large mass of spinning wheels. Someone said that rotating mass can be estimated to have approximately 3x the value of normal, sprung weight. So an estimated 21 kg of weight saving. Pretty impressive. And the reduction in unsprung weight also helps the suspension. Great concept IMO as the car wil probably feel better to drive, just by changing the wheels.

Rotational mass and unsprung weight are totally two different things and have different effects.

Rotating mass adds to the total vehicle effective mass when it comes to acceleration and braking. It has little to no incidence on handling.

Unsprung mass affects how fast the suspension can react to road irregularities to help the wheel stay in contact with the road and impacts the handling of the car. It has no incidence on acceleration or braking.

How rotating mass affects affects effective mass (its mass factor) is dependent on its geometrical characteristics and rotational speed ratio relative to vehicle speed, so one cannot use a blanket 3x number. Further, for a wheel, 3x is probably way to high. Gross calculation for 20" wheel would put the mass factor in the 1.4~1.6 range. While it will have a marginal positive impact on braking (and every bit counts), saying that the brakes will perform SIGNIFICANTLY better is a bit of an exaggeration .

[Diver]

Sick.

[vincE92M3]

These don't look that great. Reminds me of the wheels from the 335i M-sport.

[twin fed]

Nice innovation, but am I the only one who thinks they are hideous?

[PARTSFROMERIK]

Originally Posted by twin fed

Nice innovation, but am I the only one who thinks they are hideous?

No I believe everyone will agree with you haha.

[W12x]

Originally Posted by PARTSFROMERIK

I had a buddy buy them at ford and the cost of the wheels with tax came out to 32k...

I do believe you on that...I have seen a picture from some Ford dealership parts department and the wheels cost somewhere around 20K or more when buying individually.

What I'm trying to say is that if BMW make these available as a package, it should not be as expensive as buying them as parts. Sometimes you can add a $1500 package that includes a set of upgraded wheels, and the same wheels will cost you $1000 a piece if buying as parts.

But if BMW wants Ford parts money when selling them as a package, then it's pretty stupid considering how expensive the M4 GTS already is.

[Mad One]

My buddy who is getting a GTS has been quoted £14k!

[JoeFromPA]

I'm a road going Joe....I drive on real world roads.

I am very curious how these will handle significant potholes over 50k miles.

[W12x]

Originally Posted by JoeFromPA

I'm a road going Joe....I drive on real world roads.

I am very curious how these will handle significant potholes over 50k miles.

Don't think BMW really expect anyone to drive the M4 GTS for over 50K miles

[M-Pilot]

I'm very surprised how many people really like this design. It doesn't look any better than the comp package rims to me. Current 19" M3/4 wheels look much, much better IMO.

[deemo319]

These are not very attractive. BMW M GmbH wheel designers could have done much better than these.

[IB M]

Well done !!

If these can be ordered on an F80 ZCP then problem of ugly 20" wheels solved and trumped.

Mustang Gt350 was out first with CF wheels but nice follow-up answer from BMW.

[TheBingoBalls]

BMW continues to disappoint with wheel styling. While the tech is cool the design is terrible and look like budget wheels found on the 320i. Other than it being a carbon compound, these don't look like they belong on a M3/M4, never mind the M4 GTS.

[vincE92M3]

Reminds me of these... Not a good thing.

[Lojs]

I wonder if the EDC/MDM/ABS or any other systems needs different settings to maximize the performance benefit of lighter wheels?

[FilipMPower]

Originally Posted by CanAutM3

Rotational mass and unsprung weight are totally two different things and have different effects.

Rotating mass adds to the total vehicle effective mass when it comes to acceleration and braking. It has little to no incidence on handling.

Unsprung mass affects how fast the suspension can react to road irregularities to help the wheel stay in contact with the road and impacts the handling of the car. It has no incidence on acceleration.

How rotating mass affects affects effective mass (its mass factor) is dependent on its geometrical characteristics and rotational speed ratio relative to vehicle speed, so one cannot use a blanket 3x number. Further, for a wheel, 3x is probably way to high. Gross calculation for 20" wheel would put the mass factor in the 1.4~1.6 range. While it will have a marginal positive impact on braking (and every bit counts), saying that the brakes will perform SIGNIFICANTLY better is a bit of an exaggeration .

Yes, I wrote my comment in a hurry, and I meant to say that both have little together and I meant also that the lower rotating mass affects the braking, not handling and that the lower unsprung weight affects the suspension. I didnt mean to mention anything about acceleration. Sorry about that. And yes, I think I exaggerated a bit with the 3x factor, and that the brakes will be significantly better, but hey, like you said, every bit counts and this small, probably overpriced, detail will definitely make a slight improvement.

Shame that I might never actually get to drive a GTS, especially with those wheels.

[EYEHAVEYOU]

If it wasn't for the material choice, these would easily be mistaken for cheap aftermarket garbage... so the design actually suits the rest of the GTS just fine.

I can appreciate that BMW is exploring CF as a wheel choice, I just wish they weren't so hideous.

BMW taking style direction from lexani? ugh

[KHATTI]

Originally Posted by SakhirM4

It says "The wheels are fitted with Michelin Pilot Sport Cup 2 tyres adapted specially for the BMW M4 GTS (front: 265/35 ZR19, rear: 285/30 ZR20)."

But the picture definitely shows 255 tires.

Not to mention they are Continentals and not Michelin Pilot Sport Cup 2's.....

[Slow///1]

Originally Posted by vincE92M3

Reminds me of these... Not a good thing.

Except those are better looking...