Bicycle Mechanics - rims shedding metal into the brake pads, HELP!!!!!!!!!!!!

I have a problem my rims are shedding metal pieces that are getting embedded in the pads I have a X139 rims with newly installed XTR v-brakes with shimano extreme conditions pads. I don't undestand why it is doing this I tried adding new pads but it did nothing to help. I cleaned the rims as well as readjusting the pads but to no avail. If anyone can help me I am desperate.

JR_Sith

I have 517 rims and Avid Mag's with the same extreme conditions pads you have and I have to pick out little metal chunks every few rides or so. The rims were already worn, but I guess the pads are too hard and are eating the rims. I have not done anything to resurface my rims, though. Try cleaning the pads, too. Scuff them with some sandpaper or a wire brush before/after every ride and make sure you clean out the schwag in the grooves. Keep adjusting them like you've been doing, and maybe consider switching to less aggressive pads once the trails dry out.

I think the Shimano extreme condition pads you're using are more abrasive than the regular pads to cut thru all the dirt, mud and water to give acceptable braking. I agree with "live311" about switching to less abrasive pads before your rims turn into aluminum foil.

hey guys thanks. I didn't think of that, it should have been obvious because I, unfortunetly run koolstop pads in the front because the shimano's are hard to find in my area. I don't have that problem in the front. do you guys have any pad suggestions?

JR_Sith

The Kool Stop Salmon or Dual-Compound offer the best braking under all on-road conditions (including snow and some sand or mud). They are also much less aggressive to the rims than Shimano pads. They also are more durable

I don't know the difference between various types of Shimano pads, but I'm aware that Shimano pads have a reputation to eat rims.

Regards,