Same here and my discs were fuxx0red within a thousand miles. I think that tiny imperfections in the wheel casting, and a fixed mounting, and not-the-best-quality discs, all add up to a recipe for warpage.
I seem to recall that OEM discs are typically cut from a huge coil of steel cut into slices. The nearer the centre of the coil your discs are cut from, the more likely they are to deform when heated. High quality aftermarket discs by Galfer, Braking, Brembo, EBC etc. are milled out of flat sheets instead to far higher quality. I would seriously consider replacing the Zero discs with one of these manufacturers - they will likely last far better. Even better if you can get a fully-floating rotor mounting as well but it's unlikely there's a handy fitment for the SR/* bikes without possibly replacing the whole front wheel...
I think it was Spondon who invented the fully floating button mount for disc brakes 40 years ago but it is a bit strange that they're not more commonly used. The fully decoupled mounting allows the discs to expand when they get hot without buckling against rigid cast wheel mounting points, and isolates the heat to the rotor blade rather than allowing it to heat the wheel up (potentially making
that change shape, too...) etc. It's win all round.
Cas
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Topic: Replacement brake disk for 2020 SRS (Read 2948 times)