Geomet coated Brake Discs

[Puddles of Oil]

I have received an E Mail from Moss Europe promoting the benefits of Geomet coated modern Brake Discs for MGBs, Triumph TRs etc. The Geomet is listed as having an 8 micron thick coating on the disc.

Has anyone used discs coated with this stuff and what are the advantages/disadvantages? It seems like a very thin coating that I would presume will be swiftly worn away by the brake pads or am I wrong? I always thought that the quicker a disc built up surface rust on these old cars was an indication of how good it was.

I remember Triumph motorcycles chrome plating the discs on some of their T140 Bonnevilles in the 1970s and having problems as it wore off unevenly.

Best Wishes,

Puddles.

[thebraketester]

My guess is that they are coated to prevent rusting on the unswept areas. The pads remove the coating on the swept area.

[PositronicRay]

The motorbike thing was stainless, Japs used it as well, poor wet performance so went back to cast iron.

Pagid use Geomet, seems to work, helps the top hats from corroding and looking unsightly.

Edited by PositronicRay on Saturday 2nd July 17:46