I was hoping someone could give me some advice from the photos. They have got at least 19,000km on them, maybe more, however, I don't know for sure as I've bought the car used.

Thank you very much in advance and wish everyone happy holidays.

 

if it shake and vibration coming to a stop then yes , if smooth and nothing no vibration then no....

 

No.

 

Looks fine to me.

So No need to resurface.

 

Thanks for all the advice so far, so the fine "lines" are normal?

 

I never "resurface" my rotors. You can buy new rotors for about $50 a rotor. For that price, it is not worth it in my opinion to have someone take your rotors off the car, resurface them, and then put them back on.

 

+1.

 

There are many reasons to need to resurface or replace rotors.....taking a pic to only look at the grooves of the rotor isnt enough..

if a rotor is warped you will feel the vibration...
remaining thickness of rotor
scoring, etc..

Technically speaking go read the factory service manual and read the minimum allotted thicknes and proceed from there...understand that the turning process will also remove material and that must be taken into account. the limits are small....

FSM here:
https://my350z.com/forum/maintenance...anual-fsm.html

Measure rotor thickness with rotor digital calipers:
Autozone, etc have them to use, rent out, or just hand carry in your rotors and have them measure them for you:

http://www.google.com/products/catal...ed=0CHkQ8wIwAA

these are needed over regular digital calipers because the rotor will have a raised lip that needs to be ignored in the measurement. you can see it in your pictures. its the very very most outside edge of the rotor, common to the pad contact surface...its the uncontacted edge that is a visual indicator of how much material has already been removed under brake pad friction.

you can also purchase inexpensive harbor freight digital calipers and then mount adapters like these on:
http://compare.ebay.com/like/2305577...Types&var=sbar

-J

 

^Great response

 

Yes of course. Dirt and debris will get between the pad and rotor, and "cut" lines in the rotor. No effect on performance. When it comes time to replace pads, turn the rotors.

 

jasonz-ya always has the best responses i've seen. machining rotors is not needed unless excessively worn past safe thickness, warped, badly grooved, or damaged by pads worn to metal backing. new pads will initially scrub the rotors if you properly bed in the pads.

 

thanks for all your inputs. Appreciated them.