when the car was in service at 4th year,

they have already recommended changing pads, so my LG took them off and sanded. it is the 7th year now, he thinks it is time to change the pads and rotors.

they are very thin and rusty already. I think when you send your car for service, they will recommend you the time of service. you just need to pay for it.

for my LG, it is his hobby, a pride of achievement that he can do and others cannot.