So, I just received new rear rotors from a company I prefer not to name right now. The cross-drilling on several holes goes right through the support/vent vanes. I am not comfortable with this. Seems pretty obvious to me that if drilled through the support/vent vanes, the structural integrity and overall strength of the rotor is compromised. Also, if only some vanes are drilled through and not others, this would likely affect the balance of the rotor as well.

Someone please chime in. Tell me I am overreacting. I am about to ask for a full refund, but I want to make sure I am not over-thinking things.

 

Drilled rotors are pretty much useless on anything but a racing application. It is to get rid of gas build up and just not necessary for normal driving, plus it eats up pads.

 

I agree... not really the point of this post, but I agree.

 

I understand it was not really what you were asking, but thought it might make you feel more justified in returning them, and getting other rotors.

 

seems odd that they couldn't hit things uniformly, but I've never had x-drilled rotors, so I'm not sure.

 

They are definitely not drilled uniformly. It's like the math was off just a little bit. Some vanes are drilled all the way through, while others were drilled just off the vane, so only half the vane was drilled through. Some of the holes don't even go all the way through - the drilling was stopped when the vane was hit.

I don't believe there is really anything to mull over the more I think about it. This is just sloppy work.

 

If the work doesn't stand up to your expectations, return them. You are the one who is going to be driving on them, if you don't feel safe about it return them.

From what you describe it sounds like sloppy machining. That company need a new machinist.

 

I agree. Return them and get a set of Power Slot Cryo rotors. That's what I'm running. Quality and rotors are great!

 

Thanks for the replies... I installed the APRacing BBK up front just this weekend. I'll probably go with EBC slotted rotors in the back after I resolve this mess. Truth is, with the BBK up front, I can probably get away with paper plates as rotors out back. The frustrating part is that I used this particular company for the rear rotors because someone on here had high praises about this company. Maybe they are great, but at this point, if they can simply package this kind of work without noticing the defects, it makes me believe that there must have been several other compromises made in the production process that I am just not aware of.

I'll keep you guys posted!

 

For an F150 (or any truck really), cross drilled rotors are not the thing. You have noticed the expanse of slotted and now dimpled rotors which are cooling, degassing and removing dust without the weakness of holes. Technology is providing superior braking today in the absence of 17 inch racing rotors.

I've spent quite a bit of time exploring brakes for my own Screw in the last week and will update anther thread here in a minute.

 

Quote from Company's response:

"I have been informed the rotors are machined using a computerized process (there is no way to avoid the veins entirely). We sell this rotor frequently and the drilling does not effect the integrity of the rotors."

Nonetheless, they agreed to a full refund and waiver of the restocking fee. I can't ask for much more than that.