Bicycle Mechanics - Scratch marks on rims

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s0fresh
06-16-04, 03:51 PM
hey guys,
I was wondering if it is normal to have scratch marks around the rim made by my brakes. If you get them is it bad for your rims? Do i need to replace my rims?

So if any of you guys know please reply.
Thanks

DieselDan
06-16-04, 08:05 PM
Not really, only if the scratches are deep. The scratches are normal, caused by sand getting between the pads and the rim.
s0fresh
06-16-04, 08:07 PM
ohhh thats good then.. marks that are black right?

DieselDan
06-16-04, 08:13 PM
The black marks can decrease braking performance. You'll need to clean the rims, but don't use an oil.
Fat Hack
06-16-04, 08:52 PM
Tiny bits of aluminum from the rims can get stuck in your pads, sometimes even building up to chunks that are about 1 or 2mm in size. These obviously scratch the crap out of the rim