Are these lines normal in my front rotors?
 

These lines do not appear to be carved into the rotor and the pads were fine when i removed them. But I just want to check if this is a typical look for a stock rotor.

Re: Are these lines normal in my front rotors?
 

The lines in the middle are stock on some rotors so that is fine. It does look like you have a lip at the edges of where the pad rides, so you should get them turned unless they are too thin (minimum thickness) to be turned. You would then need to replace them.

Re: Are these lines normal in my front rotors?
 

Yes,I have the same rotors on the front of my 4x4 suburban.

Re: Are these lines normal in my front rotors?
 

MY 73 has the center lines on them

Re: Are these lines normal in my front rotors?
 

I thought the lips were stock, they look perfectly rolled. But what do I know.

Re: Are these lines normal in my front rotors?
 

A guy @ the machine shop that used to turn our rotors (years & years ago) told me they were wear grooves. Once the rotor was turned down enough the grooves were gone & you knew it was time for replacing them.

I always thought that was a possible reason...... but not definitive. These days, they just mic them to determine if they're worth turning.

Re: Are these lines normal in my front rotors?
 

a machine shop in ft worth tx. where i live said they were heat grooves.

Re: Are these lines normal in my front rotors?
 

Nope, rotors are smooth, inside to outside (not counting the stock center groove, slotted or drilled one). If you have a lip, your pads have worn away the metal of the rotor. It's common to all brakes. Even drum brakes can create a wear groove which makes them a real PITA to remove.