Runout figures above this will lead to vibration after 3000 to 4000 miles due to what we call disc thickness variation (wearing a thin spot on the high point of the rotor as it runs off-true) which is NOT a warranty condition.
So you see this is no cheap import brake disc. These brake discs have the highest integrity and product quality on the aftermarket. An OE quality replacement disc, made of the finest grade steel and a perfect replacement disc for any car.
EBC also emphasises that disc must be fitted to absolutely clean hubs free of all dust dirt rust and scale and that COPPER OR MOLY GREASES are NOT used. Such greases contains abrasive particles which can cause runout being similar in effect to dirt particles on your hub.
When replacing rotors it is essential to replace the brake pads. At any brake service the brake pads are as important as the new brake rotor and not replacing brakes with all new components could result in a safety issue. EBC Brakes produce an installation guide for brakes that you can view here and purchase
If you wish to install brakes yourself and you are not a trained mechanic there can be safety issues. Replacing worn components can be achieved by competent mechanics but the brake hydraulics or the brake lines or brake caliper is quite a sophisticated part of your brake system and brake repair should be carried out by a trained professional.
