which disc rotors???

I'm having some 650b wheels built. I'll need new centerlock rotors. My current bike has 700c wheels with TRP 160 rotors and Shimano 105 mechanical disc brakes. Which rotors would you recommend for the new wheels and why? I'd rather not spend high dollar for them. so if $30 rotors are fine, not sure i'd want $60 rotors...

thanks!

eric/fresno, ca.

Doesn't really matter. I went with XTs because they look cool... 

RT-70S 160mm IceTech SLX/105 rotors will be fine.

If you happen to be heavy and spend much time descending down the sides of mountains, then you may want to go for RT99S...

barturtle wrote:RT-70S 160mm IceTech SLX/105 rotors will be fine.

If you happen to be heavy and spend much time descending down the sides of mountains, then you may want to go for RT99S...

i'm 205, at 6'-0" tall. And i don't like the idea of descending TOO much, TOO fast, on gravel. But 30-35mph on pavement is fun for me. Hoping to break 40mph at some point 😉

It seems somewhat "safe" to go with one of the Shimano icetech options, though i recall reading a couple of posts somewhere people saying the shimano cutout design leaves something to be desired. Just wondering which specific ones, and if there's an even better option/brand that just doesn't have the advertising budget the big S has for the market. I like finding and using equal value/quality for under-the-radar options.

thanks!

-eric/fresno, ca.

HollyBoni wrote:Doesn't really matter. I went with XTs because they look cool... 

XTs DO look cool....

Does it matter if the rotors are designated road vs mtb? What about the design of the road Ultegra rotors?

 

epzamora wrote:Does it matter if the rotors are designated road vs mtb? What about the design of the road Ultegra rotors?

I think some flat mount brake pads can have a slightly different profile but generally you can mix and match. I've been using Ice-Tech stuff but it's kind of bull**** marketing. 

Pads will make a 100x more difference in terms of fade. I went from Shimano pads to SwissStop "E-Bike" pads and the difference is night and day. (Both of them are organic)

The Ultegra rotors look cool, but if you go with the SLX level rotors (had them too) you won't miss out on anything. 

With my XT + SwissStop combo the pads won't fade even after the rotors get burnt. But usually you only get to that level if you drop in on an offroad descend where you should be on an MTB. 
Not everyone is using finned rotors, and people have been riding disc brakes before finned rotors existed. I wouldn't worry about it too much. 

If you are doing CenterLock rotors, I would stay with Shimano. They include the lockring which sells for a bit of money on its own. Their brake surface is the same between all of their rotors and the higher end ones are the same weight or heavier once you start adding in the other stuff. The SM-RT64 is a good rotor at a great price for CenterLock hubs.

dangle wrote:If you are doing CenterLock rotors, I would stay with Shimano...... The SM-RT64 is a good rotor at a great price for CenterLock hubs.

Thank you for that.