A few issues. There is pad fade and there is fluid fade. Pad fade is when the pads exceed their max operating temperature, and they can no longer generate mu/friction. Fluid fade is when the fluid boils, creating air bubbles, and the pedal gets mushy. Pad and disc choice goes a long way towards your perception of feel. If I gave you five different discs and five different pads, you'd likely like the feel better on some than others. It's subjective, and changes by driver. The shape of the pads mu curve has a great deal to do with that. The flatter the pads mu curve, the more consistent it feels across all temperatures. That is a factor that varies wildly by pad compound.

Stopping distance is a different issue, and is measurable. Do you have data logs on stopping distance of one setup vs. another? If the pad fades and creeps up on its max operating temp, it will certainly extend the stopping distance.

Also, iron discs are not all created equally. If you compare one of our 72 or 84 vane iron discs vs. stock, there is a huge difference in performance. Our discs typically run a couple hundred degrees cooler than stock, which keeps pad temps lower, and makes them less likely to reach their max operating temp.

At the end of the day, there are a ton of variables at play. If you like your PCCB's, then by all means enjoy them! I'm not being a smart **** when I say that either. Everyone likes something different. With iron you just have more control over manipulating those variables than you do with a PCCB setup.

 

Any data to back that up? Most of the savings among all of the options above are in the discs (9-10lbs per corner PCCB v Porsche Iron.) Your calipers maybe a few pounds but seems like a hard statement to support.

 

I'm confused by your post. I still have yet to see a definitive weight on the Surface Transforms discs. You're saying they're 9-10 lbs. lighter per corner than OEM PCCB discs? All of the data on our system vs. stock is listed above. On our front system for example, about five pounds per corner of weight savings are in the pad and caliper.

What I was saying is that our system with discs and calipers weighs within a pound and a half of the OEM PCCB per corner, and 33 lbs. less overall than OEM iron. I doubt the ST discs mated to OEM calipers are much lighter than our complete AP Racing setup. That's my point.

 

So nothing close to do with ST setup savings and gains.
one is rotating unsprung weight that actually is somewhat relevant, yours is mostly static unsprung weight that is pretty much only good for suspension response.
If your calipers were able to fit carbon disks that would be another talk, but they aren't, so if there is any plus it will never be the weight.

 

 

 

Are you running the ST Calipers or running stock?

 

 

Took these today.