Is the any way to cut (resurface) them? I obviously know that this can't be done at the dealer but is there a way. Has anyone had their cross drilled and/or slotted rotors cut?

 

I am not sure, but I believe thet can be turned like conventional rotors.

 

Bump....

 

DO NOT RESURFACE ROTORS, ITS A WASTE. Rotors warp due to a variety of reasons. Excessive heat is one reason but generally this only happens in extreme situations. The major reason, in my experience, is the use of impact wrenches to tighten lug nuts. Impact wrenches not only overtorque the nuts, but they tighten unevenly. This leads to built in elastic stresses that are likely to cause a rotor to warp at high temp.

The reason resurfacing is a waste is that the reason a rotor warps in the first place is that it has internal residual stresses from casting, improper lug nut torqing, etc. When a critical temperature is exceeded the rotor deforms (since metal deforms more readily at high temps). If you resurface a rotor, then the very next time you exceed the "critical temp" the rotor *will* warp again.

Technically speaking the correct procedure for resurfacing a rotor should involve first a long term heat treatment to releave internal stresses. A alternative method to remove internal residual stresses is known as "vibratory stress relief" and can be equally as effective.

Only after the rotor is "stress relieved" should it be resurfaced. The problem is that stress relieving and resurfacing a rotor will cost you more than buying an new one!!

 

 

well said crusher

 

Forgot to mention if you're looking for a quick fix you CAN have them turned, it just costs a few extra dollars. Just go slow. Only remove 2/1000" each cut. Only remove like 12/1000" from EACH side of EACH rotor total. Try to find someone with experience in doing interrupted cuts or they can really mess things up.

 

That is the key. Have someone familiar with resurfacing slotted and drilled rotors. As Crusher said, they have to be turned slow and with a sharp tool. Most places are in a rush and want to cut deep and do it in one pass.

 

Thanks fellas.

My rotors don't need to be resurfaced yet but I was wondering in case they ever needed to be.