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Advance Brake Technology
Performance Brake Rotors and Parts 

FREQUENTLY ASKED QUESTIONS
1. I feel a strange pulsation under braking. Are my rotors warped?
2. Do I need to replace the rotors when I replace the pads?
3. Do I need to machine the rotors when I replace the pads?
4. My brake pads make noise under braking, what can I do?
5. Do I need to bleed my brakes every time I change the pads and rotors?
6. I can't get my brakes to bleed. What am I doing wrong?
7. Why do my pads wear unevenly?
8. Why do my new/machined rotors have measurable runout when installed on the hub?
9. Why can't I use an impact wrench to tighten spindle nuts and lug nuts?
10. Why do some European OE brakes produce black dust?
11. Does the Zinc wear off?
12. Will the rotors fit my vehicle without any modifications?
13. Are pads included in my order?
14. I have not received a tracking number, where is my order?
15. Do you offer local pick-up?
16. The advertisement states "RWD", "Rear Disc Brake/Only", etc. in the 'Notes' column...?
17. I do not see my vehicle listed in the compatibility table? (eBay)
18. What direction are the drilled holes and slots?
19. Will my brake rotors look like the advertised picture?


I feel a strange pulsation under braking. Are my rotors warped?

Your rotors are not warped. The term “warped rotors” is frequently incorrectly used to explain the judder sometimes felt under braking, however, the iron used in rotors is almost impossible to physically warp because of its hardness and stability. Instead, the vibration is typically due to either an uneven transfer layer of friction material on the rotor face, corrosion resulting in an uneven surface condition, or by a prior unsuccessful machining of the rotor by a technician. A proper bed-in (see above) is essential to minimize the occurrence of this phenomenon.

A re-machining of the rotor surface might solve the problem temporarily, but it will likely return if there has been a conversion of the iron makeup below the deposit to cementite (also known as “hot spots”) - an iron-carbide. Cementite is harder than the base iron so when turned on a brake lathe, the harder deposit area will deflect the nose radius on the cutting tool and the high spot will still be present to a degree and the process of increasing deposit of new pad material over the high spot will re-start. Surface grinding of the rotor will produce a suitable result if the two friction surfaces are flat and parallel but there will still be areas of greater hardness. 

Do I need to replace the rotors when I replace the pads?

Rotors only need to be replaced if they are thinner than the allowable minimum thickness, if they are cracked, or if damage exists that cannot be repaired by properly resurfacing the brake rotor.

Do I need to machine the rotors when I replace the pads?

If you are experiencing no brake vibrations/judder and there is no excessive grooving/wear in the brake rotors, they do not need to be machined.  If a pulsation/judder condition is present, or if excessive grooving exists in the brake rotor, it may have to be either machined or replaced. Always make sure that after machining a brake rotor the rotor is safely above its minimum thickness specification.

My brake pads make noise under braking, what can I do?

The annoying high-pitched noise known as brake squeal is usually associated with some incorrect or inferior combination of friction materials. This type of brake noise can be reduced by the use of anti squeal plates. It can also be improved by the use of a different pad material, but also made worse if the former and current pad materials are incompatible. Other common causes of brake noise include worn pad and/or caliper hardware, surface contamination of the brake pads or brake rotors, and poor rotor surface condition.

Do I need to bleed my brakes every time I change the pads and rotors?

While not absolutely necessary, properly bleeding the brakes after changing pads almost always results in a firmer, more responsive brake pedal and better performance. Always follow manufacturer recommendations regarding brake fluid changes.

I can't get my brakes to bleed. What am I doing wrong?

Refer to your service manual.  Different makes and models require different specific bleeding procedures. Some models require a scan tool to carry out this procedure.  Additionally, if the calipers were replaced, make sure they were installed on the correct sides of the vehicle so that the bleeder valves are towards the top of the caliper.

Why do my pads wear unevenly?

Uneven pad wear can occur for a variety of reasons.  Minor cases of uneven or tapered wear can be normal, but more severe cases can be caused by:

• Worn or sticking caliper slide pins
• Worn caliper or pad hardware
• Corrosion of the caliper/caliper bracket

Why do my new/machined rotors have measurable runout when installed on the hub?

OEM maximum lateral runout specifications generally range anywhere from 0.0012” to 0.0025” measured ¼” in from the outer diameter of the brake rotor. Obviously, ZERO is the ideal number, so regardless of the OEM maximum allowance for runout, the closer to ZERO, the better.
It is very rare to see a new rotor with more than .001” of runout out of the box. Most excessive runout conditions on floating or behind-the-hub rotor applications are due to either damaged or worn hubs, lack of cleanliness of the hub and rotor mating surfaces, or uneven/improper wheel fastener torque.

Why can't I use an impact wrench to tighten spindle nuts and lug nuts?

Uneven wheel torque can cause the rotor to distort, resulting in a brake judder or pulsation.
Spindle nut torque, where specified, is critical to preload and set the internal wheel bearing lube clearance.  Undertorque will result in excessive lube clearance and overtorque can distort the bearing.  Both cases will lead to premature failure of the bearing.

Why do some European OE brakes produce black dust?

European brake systems are intentionally designed using relatively abrasive friction material with relatively soft, “high carbon” or “dampened iron” brake rotors.  While this system offers excellent performance and low noise, the majority of the dust seen is caused by the pad wearing the rotor

Does the Zinc wear off?

All zinc plated rotors will experience the same process of the coating slowly fading away. This procedure is working as intended and cannot be avoided during the proper brake-in procedure. Once the pads bite into the rotor the zinc will begin to wear but will will continue to function. It is during this intial brake-in procedure you will hear a squeeking sound when applying the brakes. Please view our Rotor Installation guide for more information.

 Will the rotors fit my vehicle without any modifications?

All our rotors are manufactured OEM-speced and are ready to install straight out of the box. These rotors are a direct bolt-on replacement to your existing rotors. If you modified your braking system and it differs from the Original Equipment, please contact us before purchasing as the rotors you may be looking at might not fit your vehicle anymore.

 Are pads included in my order?

We have separate listings and packages for Brake Rotors and Pads, but some will be included if advertised. For listings that include brake pads for the Front or Rear of the vehicle, 1 set refers to 4 individual brake pads for the entire axel on the Front/Rear. Other listings may include both Front and Rear kits with a total of 8 individual brake pads for all 4 wheels. The pads may be packaged in between the hubs of the rotors if they are not in their original boxes. If you cannot find a specific brake pad listing for your vehicle or would like to add one to your order, please contact us and we can find or create the eBay listing you need.

 I have not received a tracking number, where is my order?

We usually print our the shipping labels once the order is complete and the rotors are ready to leave our warehouse. It may take a few hours for the tracking number to appear under your order and any status to show up when tracking through UPS, FedEx or USPS.

 Do you offer local pick-up?

Yes, we offer in-house pickups to our local Southern California buyers. There are no extra charges. Please contact us before ordering or after you place your order to schedule a pickup time.

 The advertisement states "RWD", "Rear Disc Brake/Only", etc. in the 'Notes' column?

Each listing has a unique brake rotor part number. Every brake rotor is designed differently from the diameter, min thickness, and weight to the specific bolt pattern. There are part numbers that fit a specific type of vehicle equipped with either Rear Disc brakes or Rear Drum brakes which may affect the Front part number and vice versa. Other indicators such as A/T (automatic transmission), M/T (manual transmission), Turbo only, Sports Suspension, Perf. pkg, and Brembo Calipers should be taken into consideration before purchasing our products.

 I do not see my vehicle listed in the compatibility table?

Please make sure you entered your exact vehicle information from the drop-down boxes. Some listings may support your vehicle'sYear, Make, Model but not a matching Trim or Engine size. If that is the case you may need to find another eBay listing before purchasing. If you are unable to find any listings matching your vehicle you can contact us via Phone or Email and we can help find the correct parts for you!

 What direction are the drilled holes and slots?

All our rotors are machined to the proper orientation based on their position on the vehicle. Our unique design follows a spiraled cross shape, curving segments of both drilled and slotted patterns. You can also see a diagram in the top of the listing for reference.


 Will my brake rotors look like the advertised picture?

The pictures in our listings are generic representations of the item you are purchasing. It is not possible for us to illustrate each and every rotor as there are over 1500+ part numbers plus the additional machined work and zinc application that goes into every design. This would result in over 24,000 unique images. Due to the variation of the types of rotors (floating, hub in rotor, 2-pc hub assembly, etc.) some rotors may look drastically different from what is illustrated and advertised on our listings. We picked the best photo that best represents our products and our unique design patterns of the drilled holes and slots as well as the specified zinc coating. You can expect your rotors to look exactly like your existing OEM rotors but with the included performance modifications and zinc application. If you are unsure at any time and would want us to provide you an accurate diagram of the brake rotor you are about to purchase we can do that as well at your request.

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