Recently acquired an '05 Specialized Allez Sport Triple, and after taking it to REI to get some platform pedals for it, the friendly guy put them on for me and adjusted my cassette free of charge. When I was about to ride home, I noticed that when I started to pedal, I felt my pedals vibrating, which was something that didn't happen before.
I brought it back into the store and the guy looked at it again, this time looking into the hub and came back and told me that the noise/vibration felt was caused by a pitted cone in my rear wheel.
Are these common side effects of a pitted cone? At first, I thought the derailleur was off, which was why there was that noise, but when thats happened i've never felt such an intense vibrating before.
How safe is it to ride on pitted cones?