One if the reviews from Estroli claimed the brakes as the weak point, noticeable.
Brakes can be just as much as an opinion as the color of the bike is beautiful solid red, or motorsports blue white with red.
The brembo's will always carry more weight and rating because they are so highly used in MotoGP, WSBK, and OEM for Porsche and Ferrari. You first look up Hayes and you see mountain bike. WTF is that on a 20k+ BMW.
BMW had to cut cost of components that carry a brand name they pay royalties to. I am sure they negotiated very hard with Brembo and asked to help in the cost cutting so the "M" package could come in under the 25k figure. Its just my opinion of course on the actions taken with the K67 build. No one complained that much about the bite point on the K46 09-19. That just adds up to alot of gold calipers with BREMBO on the side of them. Those Hayes will get by for most riders out there. The bad is that for every one legitimate complain about fading from a pro level rider, 10 other want a be pro riders are going to follow right along and complain too.
Fading and bit points can be controlled with types of pads, fluids, and even down to your style of riding. Hayes is going to work, its just not going to work for a pro level rider that has BREMBO ingrained into their minds.
You cannot just forget the brakes because anytime you go fast, you got to stop sometime. The K67 is being presented as one fast sportbike bragging 1.5 seconds off your average lap times. Well, that might be just for the first 4 laps before the front brake start to fade out on you, BUT, it did go faster. That was one of the targets. BMW engineers just didnt get to put in the stop fast good stuff that last 22 laps. Most club sprint races are 6-8 laps. Most people are going to make it. Some will not and be buying new calipers from .. maybe @the_gooch