I am building a electric bike from a kit I bought on eBay for $219 free shipping. With a 36V 250 watt motor. I got a lead acid nine amp hour battery for $57 with shipping $80. Fairly easy to build. The problem I’m having is it has aluminum rim and the brake pads severely scored the rims. Is there a special Bike brake pad for aluminum rims and does anyone know what I can do to fix the damage rims? They are scored pretty deep and sharp I only rode it one day, but didn’t notice how badly the rim was being scored.