Yeah, I guess you're right about the heat/sealing. But I still think they are lighter and won't get bent.
But really, I hardly ever use my rear brake for slowing down, I use the front. I would love a disc up front, but I have no problems with a drum on the rear wheel.
But really, I hardly ever use my rear brake for slowing down, I use the front. I would love a disc up front, but I have no problems with a drum on the rear wheel.