Why Coated Rotors Make A Big Difference

today we're going to talk a little bit about how rust can affect the overall performance of your brake system we're also going to install some Napa ultra premium coated rotors and we're going to talk about how these coated rollers to prevent those issues this vehicle's typical of the ones we see in the Midwest Rust Belt area we're going to completely disassemble it and do a good inspection one of the inspections you should perform is looking at pad wear now in this case the inboard pad is wearing a little bit more than the outboard pad that real unusual but sometimes it's caused by either the pad not being able to slide properly you could see this pad was never lubed it was rust rusted right into that slide assembly or the actual caliper brackets now this one pin here moves pretty freely but this one is rusted solid so that can contribute to the uneven pad wear that we're seeing in this vehicle as you can see the corrosion buildup on this rotor very excessive not only in the vane configuration here but also in the back swept area the reason this gets corroded faster than the front of the rotor because you have less airflow in the back of the rotor to dry off these product the pluck or the backing plate here so you can see here rust buildup here same thing in the inside of the rotor as we discussed earlier you can see this side of the rotor is wearing pretty normal this is this is a normal pattern let's look at the inside of the rotor now you can see the difference this difference comes from a lack of airflow from the inside of the of the rotor here and what happens is the rust creeps underneath the friction material and actually causes even the brake pad to wear a little bit differently as you can see now this will definitely affect your brake performance now let's look at the Napa ultra premium coated rotor this roller is fully coated now the coating itself will come off where the brake pad will hit the rotor area but what we're concerned about is that very edge again here where that rust crept down this one underneath the material that won't happen with a coated rotor what will happen is you'll get full contact points of the pad against the rotor you'll get better braking performance and your pads will last longer okay we got all our parts on we're going to take it for a road test but I want to show you one more thing remember that rust buildup we had on the inboard of the rotor right here that came from see this dust shield right here that prevents any airflow for really getting to the backside of the road that's the whole purpose of a coated rotor to prevent that little area right there from rusting so the outboard member the outboard of the rotor that seemed to be okay that inboard we're really going for also remember the cooling vanes when he started to build up with rust it affects the performance of the rotor so we're to go ahead and put this wheel back on take it for road tests come back in we're going to pull the wheel back off it showed you as you remember the rotor we installed was a fully polymer coated rotor like this one now you can see after our test drive that polymer coating was worn off by the brake pad right in this swept area this is normal where this is okay but you could also see that polymer coating stays on the corner right here in here to prevent that rust building and creeping up underneath that swept area causing premature brake pad wear and also really lowering the performance of the whole brake package also we also have that that polymer coating is still in the cooling vane area which will prevent that rust buildup which will definitely affect brake performance you

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Keywords: Rotors, Coated Rotors, NAPA, NAPA Brakes, NAPA Brakes Coated Rotors, Polymer Coated Rotors, Brake Rotors, Coated Brake Rotors, 100% Polymer Coated Rotors, Coated Discs, Coated Brake Discs, Ultra Premium Rotors, Ultra Premium Coated Rotors, NAPA Brakes Ultra Premium Coated Rotors, UPCR

Id: eZIVH6In4zM

Length: 4min 14sec (254 seconds)

Published: Wed Mar 29 2017