Bummer... 29lb?!

[muffinman]

damn, i had this deal lined up to pickup a set of 19" BBS CK's but just found out that they weigh more than 29lb. each!! if i'm paying that much to "upgrade" to nicer rims, i was hoping for a weight REDUCTION, not an increase

buzzkill

can anyone confirm the weight? heavier or lighter vs. VMR 19" V708 RS4 reps?

[Tgr_Clw]

Well that would explain their relatively cheap price.

[muffinman]

true, but still, the design is somewhat similar to the CH's, which weigh only 24. at $370/wh. it's not expensive for a BBS, but OZ's that weigh 19lb can be had for the same price.

wasn't expecting a miracle, i know these are cast, but wasn't expecting 29lb either

[A4 JooN 2.0T]

my ultras weight 18 each corner

[Tgr_Clw]

true, but still, the design is somewhat similar to the CH's, which weigh only 24. at $370/wh. it's not expensive for a BBS, but OZ's that weigh 19lb can be had for the same price.

wasn't expecting a miracle, i know these are cast, but wasn't expecting 29lb either

Get a set of RE's and be done with it

[reggaemylitis]

Can someone give me an "unsprung weight for dummies" explanation of the performance difference (speed and cornering) between a set of wheels that weighs 18 lbs each and a set of wheels that weighs 28 lbs each? I know less is better, but I need some numbers!

Or just tell me to search if someone has laid it out just like that.

[Tgr_Clw]

Can someone give me an "unsprung weight for dummies" explanation of the performance difference (speed and cornering) between a set of wheels that weighs 18 lbs each and a set of wheels that weighs 28 lbs each? I know less is better, but I need some numbers!

Or just tell me to search if someone has laid it out just like that.

There aren't any.

But I do know that I noticed a big difference coming from 16" OEM wheels to 18" BBS CHs. 16" wheels are of course lighter.

[Ivory 305]

my ultras weight 18 each corner

Those rims seem too light though, I hear about people cracking those and bending them all the time.

[Six Speed Turbo]

Does anyone know the weight of the OEM 17" 5 double spoke rims?

[Tgr_Clw]

Does anyone know the weight of the OEM 17" 5 double spoke rims?

Most likely 25-27lbs.

[Nico]

Stock 17 inch split spoke weighs 25lb.
BBS 19 inch Ch don't just weigh 24lbs they weigh 27lb each.
Oz ultraleggera 19 inch don't weigh 18lb each either, they weigh 20lb.

Check tire rack if you don't believe me.


As for the VMR wheels IMO will weigh same a BBS CK so go for the BBS.
But you will definitely notice a difference in performance. But you get used to it pretty quick.

[mksap11]

true, but still, the design is somewhat similar to the CH's, which weigh only 24. at $370/wh. it's not expensive for a BBS, but OZ's that weigh 19lb can be had for the same price.

wasn't expecting a miracle, i know these are cast, but wasn't expecting 29lb either

18" CH's already weigh about 25lbs so I highly doubt 19's are anywhere close to 24. This is a great, but slightly dated thread and it's follow up thread.

[Nico]

Stock 17 wheels and CSC2 tires (really worn down) 21.1 Kilograms:



BBS Ch 19 wheels with 245/35/19 Falken f452 tires (new) 24.4 kilograms:

[muffinman]

those stocker 17's must be forged from concrete..

nico, i'm rocking the VMR rims right now... i like how they look but if i'm shelling out more money to "upgrade" ; i'd like a combination of aesthetics + performance (lighter wheels).

20lb for 19" Ultraleggeras is pretty damn good... i'd pick these up in a heartbeat if they weren't so "plain" looking in silver.

[VMRWheels]

VMR V708's in 19x8.5 +38 - 27.5lbs

-Charles@VMRWheels
www.vmrwheels.com

[AlexK]

Stock 17 inch split spoke weighs 25lb.
BBS 19 inch Ch don't just weigh 24lbs they weigh 27lb each.
Oz ultraleggera 19 inch don't weigh 18lb each either, they weigh 20lb.

Check tire rack if you don't believe me.


As for the VMR wheels IMO will weigh same a BBS CK so go for the BBS.
But you will definitely notice a difference in performance. But you get used to it pretty quick.

Any idea what the S-line 5-spokers weigh? Thanks.

[nomoreevo]

Why not just get some volks or something else and call it a night if you that concerned about weight?

[muffinman]

Why not just get some volks or something else and call it a night if you that concerned about weight?

Weights *not* my number one concern.. if it were, i wouldn't be rocking 28lb VMR reps.

all i'm saying is that if i'm paying $400/wh per rim, i'd hope for a wheel that's not only a visual upgrade, but an upgrade performance wise as well (weight).

[nomoreevo]

Weights *not* my number one concern.. if it were, i wouldn't be rocking 28lb VMR reps.

all i'm saying is that if i'm paying $400/wh per rim, i'd hope for a wheel that's not only a visual upgrade, but an upgrade performance wise as well (weight).

So why not the volks?

















What about the bbs CM"s?

[Audized]

muffinman: Yes, CK's weigh 28.8 lbs apeice. BBS wheels in general are stronger than OZ UL's. I've seen quite a few bent UL's in the past. If you plan on rocking 19's, I strongly recommend you go with BBS. It's more expensive but always a quality piece.

[b6onboost]

Unsprung weight is the mass of the suspension, wheels, ect...which are not supported by the suspension. Sprung weight is anything supported by the suspension and its components, such as the body of the car.

Performance wise, the heavier your wheels are the more they resist movement. This affects the handling reaction time and feel. It also increases stopping distances and slows acceleration due to wheel mass. Higher rolling resistance also decrease fuel mileage.

You also notice a decrease in performance when you upsize wheels. Lower profile tires will make the car grip turns better, but accleration and braking will degrade as you're placing more rotating mass farther away from the hub. Its physics...if you really want to get technical pick up a book.

Can someone give me an "unsprung weight for dummies" explanation of the performance difference (speed and cornering) between a set of wheels that weighs 18 lbs each and a set of wheels that weighs 28 lbs each? I know less is better, but I need some numbers!

Or just tell me to search if someone has laid it out just like that.

[slingblade]

Can someone give me an "unsprung weight for dummies" explanation of the performance difference (speed and cornering) between a set of wheels that weighs 18 lbs each and a set of wheels that weighs 28 lbs each? I know less is better, but I need some numbers!

Or just tell me to search if someone has laid it out just like that.

I found the following. It is a good comparison because its the same road, same conditions, same car, and same testing device. Some people don't like the Gtech but comparing its own numbers to itself is good

http://forums.nasioc.com/forums/arch.../t-228170.html

From SCC Mag

Step 1: Baseline
Curb Weight: 2,762 lbs
1/4 Mile:16.3 @ 84.0 mph
60-foot:2.9 sec.
0-60 mph:8.6 sec.

Step 2: 15-inch Wheels
Curb Weight:2,707 lbs
1/4 Mile:16.0 @ 85.5 mph
60-foot:2.8 sec.
0-60 mph: 8.1 sec.




Basically the wheel tire combo saved 55 lbs of translational weight (and probably much more rotational inertia since they went from 19" to 15") and the car's 1/4 time improved .3 seconds.

0.3 seconds at around 85 mph is 37.4 feet! I think you can feel that. If not, you will definitely see it!

[AudiWxGuy]

The point is, unless you're going to be tracking the car a lot. you probably wont notice it.

[HeHateMe]

Can someone give me an "unsprung weight for dummies" explanation of the performance difference (speed and cornering) between a set of wheels that weighs 18 lbs each and a set of wheels that weighs 28 lbs each? I know less is better, but I need some numbers!

Or just tell me to search if someone has laid it out just like that.

there was a post on m3forum that said something like 5 lbs saved per corner equated to 15-20 hp gain on a dyno also comparable tq gain. Don't quote me on that though. It was something like that. Surprised the shit out of me.

[AlexK]

The point is, unless you're going to be tracking the car a lot. you probably wont notice it.

How do you get that from everything that's been said? Unsprung weight reductions/additions make a far more noticeable difference than the equivalent sprung weight. 55 unsprung lbs make a half second difference in 0-60!

[muffinman]

[QUOTE=nomoreevo;2687792]So why not the volks?
[QUOTE]

haha, to be honest, i don't really like how they look

[reggaemylitis]

Thanks for the info above guys. While the bending thing worries me, I'll try to shave off a little lbs over the stockers when I finally decide on a wheel. And 18's are sounding better and better at this point. I'd rather sacrifice looks for performance at this point in time. But who knows. Sometimes all this technical shite gets ridiculous and I just buy what looks best.

[Nico]

Any idea what the S-line 5-spokers weigh? Thanks.

Not sure exactly. They are 18's so probably slightly heavier 26-27lb