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First step sounds like servicing them properly, myself, so I learn more about them, and then maybe swapping to hopes and a 180 front (which I think I have room for).
Am I naive to think that mountain bike brakes plus the biggest rotors I can fit would give me better stopping? I don’t mountain bike and haven’t found anyone asking the same question really. Are MTB discs “better” or are they just “different” somehow.
And is it wrong to want the best possible stopping power? It means I can go faster 😬
The braking power is similar across all the Shimano calipers, you could get some hope rx4 calipers which seem more powerful but are a bit more awkward to set up. Easiest is 180 front rotor but you might be limited by the fork. TBH they should work plenty well enough as is if they're working right.