Not sure if this is worthy of its own thread? But I did a search and didn’t find anything. They claim to be “high carbon” whatever that means. They appear to be coated in the same manner ebc coats theirs and the price is almost too good to be true. Anyone have any experience with these that would make me wanna try them?
Ultra HC rotors
- Thread starter D1dad
- Start date
These folks - Ultra Rotors?
Yep. I just ordered a set from Walmart for under $100 for all 4 corners. I figured is be the guinea pig here.
I can't comment about that brand, but higher carbon content makes the discs more quiet, the vibrations that we hear as brake squeal is dampenend more.
Do let us know how you like them
If they have a Geomet-type coating, they're worth trying. The coating is the most important thing because you need to be able to remove the rotor when it's time for replacement.
Please let us know how they hold up
Please let us know how they hold up
"High Carbon"? Compared to what? What carbon level makes them "high"?
EDIT: research below. The website looks like a 6th grade science fair project, but the two materials they use seem to be just a plain grey iron (G3000) or a CGI iron (GG15HC).
https://www.winherebrake.com/
https://www.winhere.com.cn/
Supposedly the largest brake maker in China.
There you go. It's not even Ductile.
https://www.makeitfrom.com/compare/Grey-Cast-Iron/SAE-ASTM-Grade-G3000-F10006-Grey-Cast-Iron:
Translation from engineering jargon: it's basic grey iron, nothing special whatsoever. The other material, GG15HC, it likely the "high carbon" material they are marketing:
https://www.viamoto.co.uk/prodimages/high-carbon-blade-brake-disc-attributes.html
Looks to me like the GG15HC is sort of Compacted Graphite material (the "flake" description of graphite).
Well, it's not CGI. Something else.
Sounds too good to be good rotors. Good luck!
edyvw
$50 site donor 2025
Sorry, but I would not put that on my car if someone paid me.
Save money on windshield fluid or IDK, gas station, but on brakes? I truly don't understand this.
edyvw
$50 site donor 2025
They are also more resistant to heat.
Some manufacturers have HC rotors without advertising. Theya re simply all HC (ATE, Textar, Pagid). They make rotors to meet performance requirements.
HC rotors eem to be "the thing" last decade. Reason? Many manufacturers lowered carbon levels to cheapen rotors and save money. Car manufacturers also buy those cheaper rotors, in particular Japanese manufacturers. Every rotor problem I had was on Toyota and Honda. Then I bought a VW Atlas. VW started to do the same with US-bound vehicles, purchasing rotors from Brembo that have lower carbon levels. I encountered the same issues with rotors on Atlas. After I replaced them with ATE (which does not advertise as HC, but rotors are much darker than OE VW made by Brembo, plus I use them on all my vehicles and on track, so I know they will do well), the problem was solved.
But you ain't gonna get a good rotor for this money! I would be scared walking by the car that has these rotors on. I mean $100 for all 4 corners?
As member @Hohn shows above, UltraHC is a trademark brand name of Winhere ( https://www.winherebrake.com/ ) , which is associated with Brake Parts Inc/ BPI: ( https://www.brakepartsinc.com/ ), both headquartered in the Chicago area. It is not unusual for companies like BPI to have a sister company for marketing/business/tax? purposes. Raybestos, Aimco, Centric, and other companies are also under BPI.
This leaves us wondering if these UltraHC rotors are the same product from the same Chinese factory as the other companies under BPI.
I.E., "Raybestos Performance rotors are made with application-specific enhanced iron which: Suppresses noise, Keeps brakes running cool, quiet and vibration-free" https://www.brakepartsinc.com/raybestos-racing-performance/product-overview/performance-rotors.html
Comments?
This leaves us wondering if these UltraHC rotors are the same product from the same Chinese factory as the other companies under BPI.
I.E., "Raybestos Performance rotors are made with application-specific enhanced iron which: Suppresses noise, Keeps brakes running cool, quiet and vibration-free" https://www.brakepartsinc.com/raybestos-racing-performance/product-overview/performance-rotors.html
Comments?
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edyvw
$50 site donor 2025
Reybestos are also from low quality to mediocre. I tried their rotors on Sienna. They lasted 5k before they started to vibrate.
I did get their rubber seals for Brembo calipers for pistons. I got used calipers to upgrade brakes on BMW. So far, so good.
I’ll use them and report back. My son’s been using the car I’m going to use them on and he leaves for the navy at the end of July. I’ll go through everything, change the fluids and install these with a decent set of pads and let everyone know. Advance auto list them for my car for $71 a piece. I’d like to say that, they can’t be all that bad. But, they can. Safety hazard? I doubt it.
If they’re as bad as element 3s I’ll know in a week.
edyvw
$50 site donor 2025
I know everyone liked them, then suddenly everyone complained about them.
What vehicle?
09 Altima and 18 rogue. Here in Ohio they corroded in less than 6 months and the E3 pads did the same on the shim. Totally warped from fall to summer on the 09. Unsightly on the 18. Cheap crappy shop setup sold to someone who doesn’t know good rotors and pads. They didn’t wear a ton but wore in ways that made me loathe them.
I get coated rotors from Napa. Corrosion resistant, break in nicely, and are made of premium ductile iron far less likely to warp.
Are they the ones that are black in color?
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