[chris719]

Originally Posted by Quadruple VANOS

I disagree and don’t even consider the topic debatable. Lighter wheel and hub assemblies objectively provide a performance improvement. Anyone who argues otherwise obviously hasn’t ever experienced what heavier or lighter wheels do to their vehicle.

You're wrong, but that's ok. G87 has cast wheels and the objective data shows it is not really worse-off for that. People think they feel a difference, it's just placebo and usually they changed tires at the same time which always makes a huge difference in feel. It's a heavy street car. No one is going to tell the difference between a centerlock and 5 lug.

[Quadruple VANOS]

Originally Posted by aaaaah

Without seeing a combined weight reduction for this, we can't know how much has been removed and if it's comparable to just getting a lightweight, forged wheel.

Lighter is objectively better.
Nobody is making anyone buy these so feel free to find comfort in not buying them.

[Quadruple VANOS]

Originally Posted by chris719

You're wrong, but that's ok. G87 has cast wheels and the objective data shows it is not really worse-off for that. People think they feel a difference, it's just placebo and usually they changed tires at the same time which always makes a huge difference in feel. It's a heavy street car. No one is going to tell the difference between a centerlock and 5 lug.

Lighter wheel and hub assemblies objectively deliver increased performance. Feel free to provide whatever evidence you think you have to dispute this reality. We’ll wait.

[M2siast]

Originally Posted by Quadruple VANOS

Lighter wheel and hub assemblies objectively deliver increased performance. Feel free to provide whatever evidence you think you have to dispute this reality. We’ll wait.

Do you mind doing the same? I don’t think I’ve never seen a compared 0-60, 1/4 mile, or lap time between a car with heavy vs light wheels. I’m curious to see it if someone compared them.
I think the onus is on you to provide the evidence as you make the claim.

[Tag]

Originally Posted by chris719

G87 has cast wheels and the objective data shows it is not really worse-off for that. People think they feel a difference, it's just placebo and usually they changed tires at the same time which always makes a huge difference in feel.

What data are you referring to? I can tell you with absolute certainty that lighter wheels make a massive difference in handling. Lighter wheels have less inertial mass for the dampers to deal with, so the wheels settle quicker. That makes for not only a more comfortable ride but also keeps the tire in contact with the pavement for maximum traction.

[///M TOWN]

[forcefed]

Originally Posted by Quadruple VANOS

You’re only right if you consider lighter wheel and hub assemblies pointless.

Go buy these for your car then, we'll wait.

[LaKuan]

May the rich live lavishly and beyond. We all know this is just so we can flex on porsches.

[NotSharocks]

It still looks like that?

It's still 3800 lbs?

Bro what.

[M Division]

I had centre locks in my 991.2 911 GTS... Never again on a road car. Nightmare.

[evoi19]

CL’s are a pain in the ass to service and for a street car it’s pointless. Rather just get a lightweight forged 19” square set and it’ll still be lighter than this.

[SYT_Shadow]

Originally Posted by BrendanZ0402

It’s funny seeing people with no experience with CL cars saying that you can just use an impact to zap these out LOL. It’s not a cup car CL system, it’s a aluminum nut that you have to baby and put on antiseize every time and follow a specific tightening, lossen a few degs, and retighten. At least that’s the case for P cars, I don’t see it being different on a BMW application. Please don’t use an impact on a road CL system. It’ll quickly become very expensive. The hytorc gun is a planetary gear reduction precision machine that has nothing to do with an impact, thus the reaction arm. These are just for hard parking. People are willing to sell their soul to convert their CL on a P car to a cup system or a 5 lug.

This.

A stupid idea when P cars do it, and just as stupid when BMW does it.

[chris719]

Originally Posted by Tag

What data are you referring to? I can tell you with absolute certainty that lighter wheels make a massive difference in handling. Lighter wheels have less inertial mass for the dampers to deal with, so the wheels settle quicker. That makes for not only a more comfortable ride but also keeps the tire in contact with the pavement for maximum traction.

The fact that the G87 6MT with cast wheels basically performs the same as the G8x 6MT with forged wheels.

I highly doubt you can feel any difference. This is urban legend and there is zero measured data to indicate it. I've swapped plenty of wheel setups for winters and never felt some kind of difference attributable to the wheel and not the tire. Yes, there is a theoretical benefit, but it is very small in reality. Many people pushing this just want to sell you $$$ wheels.

[MT6]

Nice looking M2 I like the rear wing the body kit and the RIMS

[Tallest]

Speaking from an undoubtedly very worthy experience that I have from Rennlist forums only - stay away from center lock wheels.

[Tag]

Originally Posted by chris719

The fact that the G87 6MT with cast wheels basically performs the same as the G8x 6MT with forged wheels.

I highly doubt you can feel any difference. This is urban legend and there is zero measured data to indicate it. I've swapped plenty of wheel setups for winters and never felt some kind of difference attributable to the wheel and not the tire. Yes, there is a theoretical benefit, but it is very small in reality. Many people pushing this just want to sell you $$$ wheels.

There's a reason why sport cars use lighter wheels, and I can assure you it's not a gimmick. Unsprung mass matters and is not an urban legend, it's physics. Newton's laws of motion are a theoretical framework of this.

If the performance was the same, they wouldn't add cost by putting on lighter wheels on sports cars. Lighter wheels handle better; they provide more direct steering, are more planted, etc. As an example of this check out the Corvette C8 Z06 lap times with and without carbon wheels and see which one is faster. Mind you, the vette that didn't have CF wheels still had light forged wheels.

[G MONEY]

Originally Posted by LaKuan

May the rich live lavishly and beyond. We all know this is just so we can flex on porsches.

Lol. Good one. So let’s paint this picture. You pull up your 4 series to a GT3. He looks over and is sweating your center lock wheels? I needed a good laugh today. Thanks brother

[M2siast]

Originally Posted by Tag

There's a reason why sport cars use lighter wheels, and I can assure you it's not a gimmick. Unsprung mass matters and is not an urban legend, it's physics. Newton's laws of motion are a theoretical framework of this.

If the performance was the same, they wouldn't add cost by putting on lighter wheels on sports cars. Lighter wheels handle better; they provide more direct steering, are more planted, etc. As an example of this check out the Corvette C8 Z06 lap times with and without carbon wheels and see which one is faster. Mind you, the vette that didn't have CF wheels still had light forged wheels.

This might be what I’m looking for, where is this comparo?

[chris719]

Originally Posted by Tag

There's a reason why sport cars use lighter wheels, and I can assure you it's not a gimmick. Unsprung mass matters and is not an urban legend, it's physics. Newton's laws of motion are a theoretical framework of this.

If the performance was the same, they wouldn't add cost by putting on lighter wheels on sports cars. Lighter wheels handle better; they provide more direct steering, are more planted, etc. As an example of this check out the Corvette C8 Z06 lap times with and without carbon wheels and see which one is faster. Mind you, the vette that didn't have CF wheels still had light forged wheels.

Corvette Executive Chief Engineer, Tadge Juechter stated the carbon fiber wheels result in an improvement in lap times of 1.0-1.5 seconds on a 2-minute lap.

The CF wheels for a Z06 are 41 lbs lighter in total than the aluminum wheels. So, 41 lbs of unsprung mass reduction yielded only 1.0-1.5 seconds of improvement. What do you think a barely noticeable reduction in mass from 5 lugs to centerlock on a still-alloy wheel results in?? Absolutely nothing of note and within driver margin of error. Thank you for pointing me to data supporting my argument.

[6ixSpd]

Centelock wheels are horrendously stupid for street cars.

[IsleOfMs]

Originally Posted by forcefed

Utterly pointless

I swap wheels for trackdays. I’d love to go from 20 nuts to 4 (x2) each track event.

[Tag]

Originally Posted by chris719

Corvette Executive Chief Engineer, Tadge Juechter stated the carbon fiber wheels result in an improvement in lap times of 1.0-1.5 seconds on a 2-minute lap.

The CF wheels for a Z06 are 41 lbs lighter in total than the aluminum wheels. So, 41 lbs of unsprung mass reduction yielded only 1.0-1.5 seconds of improvement. What do you think a barely noticeable reduction in mass from 5 lugs to centerlock on a still-alloy wheel results in?? Absolutely nothing of note and within driver margin of error. Thank you for pointing me to data supporting my argument.

I'm not arguing for center locks, that's a different question. I personally think they're overkill for the street or on an M car. What I'm saying is lighter wheels in general make a difference. Light wheels don't only affect acceleration, they also affect turn in and braking improving the cars overall handling. And as an added bonus they improve ride comfort.

It's fine that you don't see any value in lighter wheels but to say they make no difference, that's where we part ways.