McLaren Life banner

1 - 20 of 23 Posts

·
Registered
Joined
·
39 Posts
Discussion Starter #1
Are there any nice aftermarket wheel options available? If I have been doing web searches however not seeing many options at all.
 

·
Registered
Joined
·
886 Posts

·
Registered
Joined
·
1,523 Posts
Look too much like the factory SL wheels, why spend the extra money?
 

·
Registered
Joined
·
1,523 Posts
Ok, now those would be an upgrade / improvement.
 

·
Registered
Joined
·
303 Posts
funny how they only have 19 inch available yet somehow it fits onto a 20" rear for the mclaren? I think the problem with carbon wheels is the longevity of the wheels themselves. Over time they develop microscopic cracks that weaken the wheels. Yes, they are great for weight but once weakness of those microscopic cracks supersede the load, a complete and catastrophic failure.. That is just how carbon works... Also, Im not sure about resin withstanding the heat and cold cycles that a wheel is subjected to... Those will be the points of my concern on carbon wheels...
 

·
Registered
Joined
·
260 Posts
Idea and looks and performance are great,but the slightest sniff of a kerb and they must be toast ??? So for performance driving they are not going to work surely??
Don't the Superlights need binning after nerfing a kerb? With the advances in cf manufacture I'd expect these wheels to be much more reliable than aluminium or magnesium. No stress fatigue for starters ( one of the major advantages of the 12c over aluminium uni-cell cars).

Ok, you do need to be careful when parking, but come on, they do look the mutts.
 

·
Registered
Joined
·
560 Posts
i ordered a set of Cor 20" forged concave super lites w/supersport's for my spider. ill post pics when they are ready.
 

·
Registered
Joined
·
303 Posts
Don't the Superlights need binning after nerfing a kerb? With the advances in cf manufacture I'd expect these wheels to be much more reliable than aluminium or magnesium. No stress fatigue for starters ( one of the major advantages of the 12c over aluminium uni-cell cars).

Ok, you do need to be careful when parking, but come on, they do look the mutts.
The carbon wheels are subject to much more dynamic forces in terms of pressure and fluctuations in cold and hot. Depending on the resin that they use would determine how durable the wheel will be... Resin selection is key and if the resin selection degrades over time... wheels can go bye bye after a few years. The dymag wheels with the carbon barrel had inferior resin which caused flaking and eventual leakage in air...
 

·
Registered
Joined
·
1,523 Posts
Another issue with Superlight wheels is a reduction in high speed stability. Going lighter than the factory McLaren MP4 would not probably be an improvement IMO.
 

·
Registered
Joined
·
202 Posts
With the advances in cf manufacture I'd expect these wheels to be much more reliable than aluminium or magnesium. No stress fatigue for starters ( one of the major advantages of the 12c over aluminium uni-cell cars).
.
Why would there not be fatigue in CF?
 

·
Registered
Joined
·
260 Posts
Another issue with Superlight wheels is a reduction in high speed stability. Going lighter than the factory McLaren MP4 would not probably be an improvement IMO.

Is that from experience, as I'd have thought the gyroscopic effect on stabilising a car would be minimal?

I've heard that losing 1kg of unsprung weight is worth many times that of sprung, particularly if it's rotating. So losing 1kg per corner could give you the same braking, accelerating and extra grip levels as losing 40kg off the body.
 

·
Registered
Joined
·
2,024 Posts
CF composites don't really fatigue in the natural sense like Al or even steel. It can have a type of fatigue if the resin does not maintain the structure due to aspects like temperature and humidity or UV causing delamination, but it is very different from metals. All in all, you can almost say that there is no fatigue due to cyclical loading up to the limit of the elasticity.

The main concern here is impact resistance. This can be modeled using Finite Element Method, but not sure what assumptions are made with regards to impact forces and vectors
 

·
Registered
Joined
·
1,523 Posts
Is that from experience, as I'd have thought the gyroscopic effect on stabilising a car would be minimal?

I've heard that losing 1kg of unsprung weight is worth many times that of sprung, particularly if it's rotating. So losing 1kg per corner could give you the same braking, accelerating and extra grip levels as losing 40kg off the body.
Yes true, but lighter wheels do affect high speed stability. You can feel the difference.
 

·
Registered
Joined
·
202 Posts
All in all, you can almost say that there is no fatigue due to cyclical loading up to the limit of the elasticity.
It has been a LONG time since I last looked at things like fatigue creep etc. IIRC then it affects plastics as well hence my question why it would not affect CF. When I say a LONG time ago I mean before everybody had a PC (or Mac) and CF was hardly used at all.
 
1 - 20 of 23 Posts
Top