That pretty much summed up what I was trying to point out; it's not the rotor or the rotor finish that has given you the improvements, it's the pad. Changing the rotor to any other finish be it slots, holes, dimples, any combo, doesn't improve the braking value. The mathematics of brake torque don't change with the rotor being the same size, it was a change to a pad with a higher Cf that elevated bite. The loss of hot spotting, smearing and warping has diminished also due to the pad- this pad does not break down as an oem would at elevated use levels. On a plain or stock rotor the result would be the same.

For the record; I have nothing against the use of any of these rotors. And for the most part, aside from an increase in dust levels, they certainly won't hurt. I'm only trying to educate a bit- changing the rotor doesn't change the braking.

 

I have 6700 miles on my 07 and I can feel a vibration when braking already.

 

the dealer has said they are special rotors that will warp and unwarp to prevent permanent damage.
Thanks everyone[/QUOTE]

Yea. they are made by the same company the manufactures the Flux Capacitor that makes time travel possible.

 

thats what I thought when they told me that.

 

the dealer has said they are special rotors that will warp and unwarp to prevent permanent damage.



Some dealer actually told you this?? That's scary.

 

That is scary...huh !!!!!!!??????? Service Advisor.....NOT !!

 

Yes they did. When I was in for my broken sunroof windscreen, I mentioned the rotors to the service guy and he said they do that. I just said whatever because my car was out of warranty anyway so it didn't make sence to argue with a liar and an idiot.

 

This is an old thread, but I recommend everyone read paragraph 5 at this website (EBC Brakes http://www.ebcbrakes.com/Assets/typicalq%26a.html) EBC contends that people like myself who drive more on the expressway at "off brake" conditions (I have an 80 mile one way commute) are causing the shuddering in their brake rotors just by driving and that it will occur like clockwork at 3,000 to 4,000 miles. I have a 2006 2LT that has been to the dealer three times for this problem. There is some food for thought in this article.

 

hhrbama....

Sounds familar. It is exactly what GM has discussed in their 13 page TSB regarding warped rotor claims. But few do it.

 

I suppose there is not a flat rate mechanic in the dealer world who would take the time to either check runout with a dial indicator or clean a hub satisfactorily before installing/re-installing a rotor. EBC contends (as I read it) that if you fit the rotor for minimum runout you will be vibration free. This could take several trial and error fittings it would seem, but somewhere in the mix of moving the rotor around one bolt hole at a time I guess you could find the sweet spot with lower than .005 variation.

Bottom line here, there is a LOT of work being done for nothing. According to EBC "driving" the car is what is causing the brake shudder.

I rode my brakes slightly on the expressway last week and believe it or not the brakes were BETTER after I did this. I figured if there was a microscopic variation, perhaps a little friction might smooth it out.

My dealer told me all kinds of silly stuff like "avoid puddles" and a whole list of other stuff that from what I read in EBC's Q&A fails to apply.