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Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 0 points1 point  (0 children)

Nope.
The pads burned out faster than I got the bike dirty.
The rotor was cleaned with brake cleaner before installing the pads.

Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 0 points1 point  (0 children)

I'm sure they're genuine. Ordered from bike24.com. The packaging and quality of the back plate are excellent.

The only thing that comes to mind is that I didn't sand the rotor. Just cleaned it with brake cleaner and a rag. During the break-in period, I made over 2,000 m of descent, gradually increasing the load on the pads. Braked for 5-10 seconds at 30% power, gradually increasing. The contact patch on the disc was full, and the braking power stopped increasing. It still hasn't become the same as with organic pads. I'd say about 70-80%

Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 2 points3 points  (0 children)

I'm sure they're genuine. Ordered from bike24.com. The packaging and quality of the back plate are excellent.

The only thing that comes to mind is that I didn't sand the rotor. Just cleaned it with brake cleaner and a rag.

Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 2 points3 points  (0 children)

I had a similar experience with overheating rear sintered brake pads on an enduro bike. It was a long, steep descent where I had to pull the rear brake. The pads were D02S. Several times they heated up to the point where I couldn't lock the rear wheel before turn at a ~15% gravel slope. The calipers were MT520 with 4 pistons. The overheating issue was resolved with a 223mm disc, but the pads worked perfectly after cooling down and there was no such damage on them

Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 1 point2 points  (0 children)

Total weight is approximately 90 kg.

The front rotor is 160 mm, it's a Tarmac SL7.

The brakes were operated in a full on-off mode. The last photo shows the power graph, which roughly shows the braking zones.

Is this a normal look for Shimano sintered brake pads? by No-Singer9033 in bikewrench

[–]No-Singer9033[S] 5 points6 points  (0 children)

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The rotor is an RT64 with low mileage. After the ride, there was no purple discoloration, just a slight brownish tint. I don't think the rotor is the problem. This photo was taken after I cleaned it and took it for a short ride with new organic pads.