Just took the ' 08 Infiniti into the dealer for a few issues one of which was what appeared to me to be a lateral crack running from the hub to the outside edge of one of the front rotors. Rotors are not cross drilled or slotted and have 14K miles on them and the pads. Dealer tells me it is a hot spot on the rotor and there are a few others and it's no big deal. Have never seen this type of mark on a rotor before and have never heard the term "hot spots" with regards to rotors. Can someone offer their learned opinion as to the issue of "hot spots" on a rotor along with potential causes of same and any safety issues that could develop as result ? Sounds like "prop wash" to me.

 

I have also never heard of 'hot spots' on rotors. I would ask for a more detailed definition of what that is and what causes it.
dhc3