Originally Posted by
Jon_g2
Thanks for the information.
And yes, I never meant to sound like these rotors I have don't work or. I do believe in trying stuff out before replacing but I did mention that if the RT70s weren't good enough for steep descends I'd rather not have to find that out during a ride. I believe my braking technique is pretty good too. On top of that, it's my first brand new bike and I don't plan on buying another road bike for many years to come so I want to upgrade it where needed.
Sounds like a reasonable plan… so why not determine if an upgrade is really needed. Try a lower grade hill first and see how it feels and work from there to steeper grades.
There have been times when I have upgraded my bicycle components to the best available before trying, but it was never due to a concern that 105 or ultega will not stop my bicycle compared to DA set of brakes. On one of my steel bikes, I still have 105 brakes and they work perfectly well, as they are designed to do.