some my buddies notices on my last ride to the mountains. it is stuck to rear wheel. doesn’t feel oily. looks like black sand with very fine metal flakes. i have rear wheel off. everything looks normal. any ideas?
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strange blackpowder with very fine metallic dust
- Thread starter maverick9611
- Start date
Brake dust? What do your brake pads look like? What about ABS sensor? I have seen improperly positioned ABS sensors on BMWs rub on tone ring and wear away.
i will pull pads for closer look
on a footnote, we did ride lots of ridin on new roads. could be kicked up from the road. Foothills Parkway was just recently completed we rode the whole thing end to end
One of my mountain runner buddies who rides fjr has a similar powder on his rear wheel
That is probably what it is—road residue along with metallic dust from brake pads (assuming semi metallic pads).
Front wheel kicks up the road residue and it collects on rear wheel and the back of the bike.
There is no way that is brake pad dust. No way at all.
I looked more carefully and enlarged the photos. I should have zoomed in when initially looking at them on the phone. It is clearly road debris. If there are any metallic particles visible, they would be normal from brake dust adding to the mix.
Yes. It’s fine granulated asphalt.
Too many close up pics, and not enough big picture pics. As long as the tire wasn’t rubbing the swing-arm, that can all be related to road surface abrasion tire residue. The BRP and road surfaces all around that area are uber abrasive (and chew up tires) due to design to drain water.