Hi I got 4 new disc brake rotors for my toyota from Pit Stop, thinking it's cheaper than what's recommended by the dealer (not sure who they sub let to do the job, price was no different!).
The front rotors are fine, but both rear rotor "hubs" (not sure what they're called) started rusting immediately.
Pit Stop says that's normal.
Is that normal? Will it affect the longevity of the rotor?