Originally Posted by
JimCanuck
That is like saying your rubber brake pads will destroy your wheels due to the rubber on metal contact.
Maybe after several hundred brake pad changes, and even then, it will happen cause of the pressure applied during braking causing the rim surface to flex repeatedly and it will fail due to fatigue stresses not rubber on metal contact.
That is like saying you are going to finish cut a diamond using a block of aluminum. Good luck with that, if it works I'd love to hear about it.
Jim
Well, some rims do have warning strips that tell you when the walls are wearing too thin. It's not the rubber so much as the crap that gets embedded into the pads. Sand is a very effective abrasive, for example. Tires also pick up all kinds of abrasive particles from the road.
I agree with other posters that say you shouldn't have the tires rubbing against anything. However, I can't discount the possibility that they could wear down alumninum, or even steel, if one did let them rub.