I would think there is more to this story. This sounds like a firend of a friend forum nonsense. I'd expect some facts to back up such an insane claim. wilwood sells a lot of brake kits, they use these same calipers and same diameter if maybe .3" thicker rotors on heavy, powerful cars with huge tires. You can almost kill yourself in a ceramic brake gt3rs too without careful track specific maintenance. Are they under-braked? Running high temps fluid and not maintaining/flushing before each track day. Maybe not running high temp fluid at all. Pushing the stock 6712 bp10 pad which is just not up to the task for track use. I've even seen people install calipers upside down and tear pads up. Was he on slicks?
The wilwood isn't as heavy duty as some other kits. But it's fine for a fiesta. Probably more than most need on a ultra high performance tire. I'm a group 4 driver. I haven't had an issue with the Wildwood kit. The wilwood kit with even the lower polymatrix pads are a very serious step up from conventional brakes in stopping power and durability.
The best tpart about wilwood is that they aren't overkill. They improve ride and steering feel a lot. with the low cost of entry, they are worth it just to run their cheap iron rings that are about $50 each and bp10 or bp20 pads for a pure street car and enjoy the big drivability benefits. I have a steel brake 911 turbo on ebc yellows. The wilwood brakes are stonger and just as durable with the same fluid and care.
My only concern with the whoosh kit would be, what replacments does it use? Who actually builds this kit? Are they readily available and will they be readily available if Ron discontinued or decided to stop supporting the kit? Because ordering replacment and service parts from some of the brake kit companies is a pain in the ass. Especially in America. Given it's price point, I'd be curious who the supplier is. Those aren't wilwood parts. I'd want to know where I can get rebuild parts, rings, and replacement hats. Also, that there is a good pad choice available. And it doesnt hurt to be able to buy off the shelf replacement flexlines.
Btw, it's worth upgrading to tce performance flexline. He is a great guy and his lines are way better than the fragile wilwood lines. They eliminate some of the fussy fittings too.
Thanks for the heads up! What failed? Maybe they saved too much weight.