IIIPRO ROTORS

[alex.tomazov]

I bought these IIIPRO Bike Brake Disc rotors, the rotors do not brake as they should, I bedin them for two weeks, cleaned them, pumped the brakes, changed the pads (sram code rsc) and nothing helps, the rotors brake very poorly by their own, after these I installed TRP and Shimano rt66 rotors and they brake well

[Tijoe]

I have a brand new pair I haven't used yer.  Instead, I am using several other brands of  "floating" rotors with aluminum center and steel outer disc.

[Serge_K]

Strange. I'm no engineer but I wonder, given that steel is steel, why rotors would perform drastically differently. Maybe hardness / durability, heat dissipation, resistance to warping and what not, but I would have thought a steel rotor is a steel rotor, outside of "extreme" use (super long descent, heavy rider...).
I don't have enough experience with disc brakes myself to have formed a view from experience.
Given the price difference between my rotors and what Shimano charges though, there would have to be quite literally a magical difference in performance for me to try Shimano ones.

Edit: was price, not prince :p

[Tijoe]

Given the prince difference between my rotors and what Shimano charges though, there would have to be quite literally a magical difference in performance for me to try Shimano ones.

Ah, The "prince difference" is what matters, his metal version of rotors obviously are not "prince worthy", and sold only to us commoners.

[AzureEssence]

I'll chime in and say also avoid Zoom rotors

I got Avids from AliExpress for $10/pair instead, they are great.

[St0mpB0x]

Strange. I'm no engineer but I wonder, given that steel is steel, why rotors would perform drastically differently. Maybe hardness / durability, heat dissipation, resistance to warping and what not, but I would have thought a steel rotor is a steel rotor, outside of "extreme" use (super long descent, heavy rider...).
I don't have enough experience with disc brakes myself to have formed a view from experience.
Given the prince difference between my rotors and what Shimano charges though, there would have to be quite literally a magical difference in performance for me to try Shimano ones.

I'm nearly an engineer and steel is definitely not just steel. The same steel alloy can have a factor of 4-5x difference in yield strength depending on how it is processed. A very famous example of variation in material properties is the ductile-brittle transition temperature. This transition temperature changes with the specific alloy of steel used. I'm not sure what properties make a good brake rotor but if you forced me to take a stab in the dark, I'd guess hardness is quite important. Again, this can have a very large spread across different steel alloys and even a pretty large spread within how those individual alloys are processed.

[flyedf]

i've had mine for almost a year, and they're good.  used them with iiipro and zrace calipers.  they do need some time to break in, and then they'll bite.  big difference over rim brakes during winter moisture/water.  I even went down to 140mm, road bike.

[kbernstein]

I know multiple people here said to have ordered some but never posted a review to my knowledge. I've put them through 300km with 8500m of elevation and I'm very, very happy with them. They've replaced RT64s on my gravel bike and I never imagined rotors could make such a braking performance improvement. I will buy another pair for my road wheels with ultegra too.

[Daviddavieboy]

I know multiple people here said to have ordered some but never posted a review to my knowledge. I've put them through 300km with 8500m of elevation and I'm very, very happy with them. They've replaced RT64s on my gravel bike and I never imagined rotors could make such a braking performance improvement. I will buy another pair for my road wheels with ultegra too.

 I have a set installed about 2 weeks ago on my gravel bike. Unfortunately I have not used them at all as I have been putting big miles on my new road bike (XM Carbon) Glad to hear they work great!

[Tijoe]

I have a 180 on the front and a 160 on the rear of my full suspension bike.  They took a while to bed in, but work well now.
I have a 180 on the front of my Hardtail, and it has been on this bike for over a year and has seen a lot of heavy braking.   So far, it has worked well.

[Lotnik]

I have centerlock discs from them in 160/140 and I'm happy with the performance.

[pushpush]

I have a 180 on the front and a 160 on the rear of my full suspension bike.  They took a while to bed in, but work well now.
I have a 180 on the front of my Hardtail, and it has been on this bike for over a year and has seen a lot of heavy braking.   So far, it has worked well.

Where did you find this in a 180? I could only find 140/160. I would use these on my gravel bike if I could find a 180.

[jonathanf2]

I have the same pair of centerlock 160mm rotors on two of my road bikes. They work great especially for the price. Though I never saw them in 180mm.

[crazyravr]

I know multiple people here said to have ordered some but never posted a review to my knowledge. I've put them through 300km with 8500m of elevation and I'm very, very happy with them. They've replaced RT64s on my gravel bike and I never imagined rotors could make such a braking performance improvement. I will buy another pair for my road wheels with ultegra too.

I have the same in 140mm coming in next week to replace my 105 group 140/160mm on road bike. Will post the results.

[Tijoe]

Where did you find this in a 180? I could only find 140/160. I would use these on my gravel bike if I could find a 180.

Mine are 6 bolt rather than Centerlock.  The title of the thread is IIIPro Rotors, No differentiation of centerlock or 6-bolt mounting. I commented on my IIIPro floating rotors that have worked well to date.

https://www.aliexpress.us/item/3256805671232039.html