2022 - Rotor recommendations?

[Fat Larry]

I would like to order some rotors for an enduro build and after a few searches on here i'm unsure of what to order.

I'm fairly new to mtb and rotor brakes so don't really have a point of reference to compare anything i might order from Ali.

Any suggestions? I know i want 203 or 220mm.

Anyone know of a company that sells thicker rotors? I have an mt5 calliper i'm using on this build and read they use slightly thicker than normal rotors.

Ztto seem to have mixed reviews.

Do i need floating? Do floating rotors fail at the joins?

Thanks.

[benando]

I bought the ztto floating rotors in 160 and 140mm. They do seem thicker, even after alignment with spacers so that they fit centered between my brake pads. The 160 had a minor wobble which I corrected by gentle bending with my hand. I also had low speed brake shudder which went away after 10 miles of road riding.

Overall I wouldn't buy again simply because the solid steel rotors are plenty for me. But if I had to buy floating rotors, I would buy ztto again. Floating rotors do not have any history that I've read of failing. Also the ztto rotors are identical to differently branded rotors I see from Western bike retailers.

My experience with smaller rotors could easily differ from others experiences with the larger ones. More chance for a bad wobble to occur when bigger.

[StiffWeenies]

I think Onirii might have something right up your alley

They've contracted Stirling Design (designer of Niu Aero) to come up with these disc rotors that'll come in 140/160/180/203mm sizes with 6-bolt or CL mounting options. These rotors are supposed to be paired with the upcoming Onirii M4 and M2 post mount brakes for MTB. I guess this is also formal proof that Onirii are indeed working on proper mineral oil hydraulic brakes, hopefully we'll see a flat mount version of that 4 piston M4 calliper.

[Fat Larry]

Interesting. Nice looking rotors.

Are those cable actuated hydro brakes? How are they?

[StiffWeenies]

Interesting. Nice looking rotors.

Are those cable actuated hydro brakes? How are they?

The BR-05 callipers in the second picture are hydromechanical, I can't comment on performance because I've never tried them before but they seem to be the best hydromechanical option after the Juins which are 2-3x the price depending on model. The M4 and M2 appear to be proper mineral oil hydraulic and the M4 lever/calliper design itself looks to be very Trickstuff/Hope RX4+ PM inspired, but I'm not too knowledgeable on MTB brakes and could be totally off here.

[Icyseanfitz]

Like the look of those m4 brakes, any indication of release?

[StiffWeenies]

Like the look of those m4 brakes, any indication of release?

No idea but definitely not anytime soon considering the manufacturing and logistics situation right now.

[Fat Larry]

I think Onirii might have something right up your alley

They've contracted Stirling Design (designer of Niu Aero) to come up with these disc rotors that'll come in 140/160/180/203mm sizes with 6-bolt or CL mounting options. These rotors are supposed to be paired with the upcoming Onirii M4 and M2 post mount brakes for MTB. I guess this is also formal proof that Onirii are indeed working on proper mineral oil hydraulic brakes, hopefully we'll see a flat mount version of that 4 piston M4 calliper.

Any idea where i can get those rotors? Can't find them on Ali. Are they not out yet?

[StiffWeenies]

Any idea where i can get those rotors? Can't find them on Ali. Are they not out yet?

The 140/160mm CL/6-bolt versions should be released soon domestically on Taobao. The model names are CD-02 and CD-03 respectively

[1Sigma]

The 140/160mm CL/6-bolt versions should be released soon domestically on Taobao. The model names are CD-02 and CD-03 respectively

I’ll keep an eye out.  I don’t see them onTaobao yet

[Fat Larry]

I couldn't wait and ordered some random floating Rotors which it seems a few brands on Ali are putting a lable on. Hopefully they're not garbage.

https://www.aliexpress.com/item/4001191926306.html?spm=a2g0o.order_list.0.0.83231802HmbhyM

Was tempted by the version with cooling areas added but i have no idea if they're a gimmick or not.

https://www.aliexpress.com/item/32947453001.html

Can report back if anyone's interested but bear in mind i have minimal experience with disc brakes so it'll likely be limited to: They seem to work good or they don't work at all/fail catastrophically.

I wanted centrelock but didn't find many cheap rotors, so ordered some six bolt adapters from Sensah. Again another potential failure point, which is suboptimal.. fingers crossed i guess. 

[StiffWeenies]

I couldn't wait and ordered some random floating Rotors which it seems a few brands on Ali are putting a lable on. Hopefully they're not garbage.

https://www.aliexpress.com/item/4001191926306.html?spm=a2g0o.order_list.0.0.83231802HmbhyM

Was tempted by the version with cooling areas added but i have no idea if they're a gimmick or not.

https://www.aliexpress.com/item/32947453001.html

Can report back if anyone's interested but bear in mind i have minimal experience with disc brakes so it'll likely be limited to: They seem to work good or they don't work at all/fail catastrophically.

I wanted centrelock but didn't find many cheap rotors, so ordered some six bolt adapters from Sensah. Again another potential failure point, which is suboptimal.. fingers crossed i guess.

IIIPRO shouldn't be too bad. They co-develop the BR-05 hydromechanical and upcoming M4 hydraulic calipers together with Onirii and Onirii themselves used to bundle those floating rotors with their brakes before they came out with the CD-01.

and good eye spotting the cooling fin version! I wonder if they’re any thicker/beefier than the standard ones?

[hazzer19]

I've been using these lightweight Deckas rotors https://www.aliexpress.com/item/32964003633.html?spm=a2g0o.order_list.0.0.29ba1802DilydJ with 6 bolt hubs and when I switched wheels I got these adapters https://www.aliexpress.com/item/4000260123765.html?spm=a2g0o.order_list.0.0.29ba1802DilydJ and they have been working great in 6 bolt and Center Lock set up.

[Fat Larry]

I notice that all the chinese rotors seem to have less material in the breaking surface when compared to Shimano/Sram. Wouldn't that affect performance/heat dissipation and perhaps mean they wear faster?

[St0mpB0x]

IF they are indeed thinner that means they will get to an unsafe thickness faster. Performance (however you wish to define that) and heat dissipation of a thinner rotor with all else being equal will likely be lower. Would you notice the difference? Probably not.