When you get a bad feeling about something, it's often an indication of implicit knowledge that you might not be consciously aware of. In this case, I'd suggest

When you get a bad feeling about something, it's often an indication of implicit knowledge that you might not be consciously aware of. In this case, I'd suggest your brakes might need maintenance/replacement. As the sibling post here notes, you shouldn't be working near the limit of your brakes in normal use, anyway, and so a small reduction in their ability in rain shouldn't be a problem.