Difference between standard CSL alloys and Magnesium Cup alloys

**danr55** · 12-05-2009, 01:17 PM

Hi Guys, another stupid question

What's the difference? Guessing the Magnesium Cup wheels are a fair bit lighter, and therefore handling is improved.

Much difference in the real world?

**shimmy** · 12-05-2009, 01:34 PM

yes much much lighter BUT the magnessium ones are a problem when wet, as they tend to fizz around the street and let off steam before disappearing

danp · 12-05-2009, 01:35 PM

Quote:

Originally Posted by danr55

Hi Guys, another stupid question

What's the difference? Guessing the Magnesium Cup wheels are a fair bit lighter, and therefore handling is improved.

Much difference in the real world?

I believe that "magnesium cup wheels" are a figment of someones imagination, there is no such thing. (but this myth was somehow perpetuated, and people often mention them in ads etc)

CSL/cup wheels are lighter than normal wheels, but not magnesium.

**DazBlackCSL** · 12-05-2009, 01:47 PM

Cup = what tyres are on it only

Shimmy

**danr55** · 12-05-2009, 03:01 PM

there's only one type of csl wheel? And presumably they are all magnesium?!

JordanH · 12-05-2009, 03:05 PM

Quote:

Originally Posted by danr55

there's only one type of csl wheel? And presumably they are all magnesium?!

No, I read the above as none of them are magnesium.

E46ACS · 12-05-2009, 03:29 PM

There are the "CSL" wheels, which are nice and light.

And there are the "CS" wheels (from the M3 CS) which are the same design but weigh about the same as the M3 OEM 19" wheels.

The CSL wheels are made from a lighter alloy, I believe the 'magnesuim' is a bit of a myth.

The CSL wheels are much lighter though, when I swapped my OEM 19" on my M3 for CSL wheels, I couldn't believe how much of a difference there was between them.

I think the term "cup wheels" just comes from the fact that the CSL came with the Cup tyres as standard, but you could spec M3 OEM 19" with PS2's as an option.

englebert · 12-05-2009, 04:21 PM

Doesn't help when owners of CSLs call them 'Cup wheels' in sale adverts.

Above is right, no such thing as a Cup wheel. There are Cup tyres, that it.

There is no mag wheel and the CSL wheels are in fact pretty heavy, not lightweight at all.

**glendog74** · 12-05-2009, 06:33 PM

They are heavy - a real pain in the ass lugging a set all the way across to Germany!

7.77 · 12-05-2009, 06:58 PM

just look at this website

http://www.wheelweights.net/

and you will have the reply

12-05-2009, 01:17 PM	#1
danr55 S5 - Full Throttle Join Date: May 2009 Posts: 262 Casino cash: $604	Difference between standard CSL alloys and Magnesium Cup alloys Hi Guys, another stupid question What's the difference? Guessing the Magnesium Cup wheels are a fair bit lighter, and therefore handling is improved. Much difference in the real world?

12-05-2009, 01:47 PM	#4
DazBlackCSL CSL Register Uber-poster! Join Date: Apr 2008 Location: Shaboogling Posts: 7,199 Casino cash: $28478	Cup = what tyres are on it only Shimmy __________________ CSL Register Lifestyle Coach and Social Secretary

12-05-2009, 03:29 PM	#7
E46ACS S5, Sport Off, DSC M-track Join Date: Oct 2008 Location: Durham Posts: 771 Casino cash: $1950	There are the "CSL" wheels, which are nice and light. And there are the "CS" wheels (from the M3 CS) which are the same design but weigh about the same as the M3 OEM 19" wheels. The CSL wheels are made from a lighter alloy, I believe the 'magnesuim' is a bit of a myth. The CSL wheels are much lighter though, when I swapped my OEM 19" on my M3 for CSL wheels, I couldn't believe how much of a difference there was between them. I think the term "cup wheels" just comes from the fact that the CSL came with the Cup tyres as standard, but you could spec M3 OEM 19" with PS2's as an option. __________________ "Brake.....brake......SUPER BRAKE!!!"

12-05-2009, 04:21 PM	#8
englebert S5 - Full Throttle Join Date: Jun 2008 Location: Kent Posts: 397 Casino cash: $705	Doesn't help when owners of CSLs call them 'Cup wheels' in sale adverts. Above is right, no such thing as a Cup wheel. There are Cup tyres, that it. There is no mag wheel and the CSL wheels are in fact pretty heavy, not lightweight at all. __________________ '03 SG CSL - SOLD Making do with a CSL replica, 1M and E90 M3.

12-05-2009, 06:33 PM	#9
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	They are heavy - a real pain in the ass lugging a set all the way across to Germany! __________________ Cha'mone Mother F**ker!

12-05-2009, 01:34 PM	#2
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	yes much much lighter BUT the magnessium ones are a problem when wet, as they tend to fizz around the street and let off steam before disappearing

12-05-2009, 03:01 PM	#5
danr55 S5 - Full Throttle Join Date: May 2009 Posts: 262 Casino cash: $604	there's only one type of csl wheel? And presumably they are all magnesium?!

12-05-2009, 06:58 PM	#10
7.77 S5 - Full Throttle Join Date: Dec 2008 Location: france Posts: 284 Casino cash: $4221	just look at this website http://www.wheelweights.net/ and you will have the reply