Fixing damage to brake rim surface somehow the alloy braking surface of my rear wheel's rim has got a series of quite shallow lacerations, less than a mil' deep bunched quite closely together (the effected area is no more than 1/8 of the rim).

When I brake (side pull road bike brakes) I can hear it making a different sound on each rotation has the damage goes past the pads.

The wheels are Reparto Corse's which came with my Bianchi, they are new and have less than 1k miles (probably way less). And they are fine in every other respect.

So I guess my options are:


Leave it and let it smooth out with use. May take some time and wear down brake pads faster.
Lightly sand the worst offending parts with high grit abrasive paper.
Fill the damage with expoxy (or similar) then sand.
Replace the rim (would it worth the labour cost?)


So are any of these good options or do you have any idea what you may also do?

Thanks
You've hit the major repair options in your question. I've heard of people filling in spots on a fork stanchion before and having it work OK, so I'd assume a rim would probably work too. The only difference might come from when the rim heats up due to braking, the filler could expand/contract differently than the rim material and get dislodged again.

I wouldn't recommend sanding as removing more material will make the braking surface uneven anyways. If it were me, I'd leave the damage as is and only address it if it starts to cause the brake pads to wear very quickly.