About 6 months on the last set, plenty of Peaks & mudfest riding
To counter this, my experience in gritty conditions was not as good.
I bought SS Kevlars for a trip to Garda and in those conditions they were brilliant. I went through 1 change and was 50 % through the second after over 20,000 metres of descending.
However…
My first ride when back in the UK was a wet summer day in Calderdale.
The remaining 50% of the pads was gone, down to metal, within 15 miles.
…and its not as though they hadn’t been bedded in!!!
For the UK, I’ll only consider sintered.
For drier places, i.e. no grinding-paste, yes they were very good, didn’t lose much efficiency even when red-hot, maybe a bit better than organic.