• I think pad contamination is the likely culprit. Indeed even a tiny amount of chain lube etc will ruin the pads. It's also worth looking in at the pistons to check there's no small leak causing brake fluid to contaminate the pads.

    Well, both bikes will have brand new pads and freshly scrubbed rotors, lets see if that works or whether Tarty Bikes was correct and once used with contaminated pads you should bin the rotors and start totally from new.

  • once used with contaminated pads you should bin the rotors and start totally from new.

    Ha! I strongly disagree with that. I suspect tarty bikes are looking to sell some rotors.

    But seriously, it's complete bollox. I've never had to bin a rotor due to contamination. ipa/muc off brake cleaner will sort

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