Glen – I ride all year round albeit mainly on peat doing several thousand miles per year. There have been many discussions on here about conditions and areas that eat pads – Afan, Peaks and Quantocks all being suggested as areas that eat pads. each of these areas at least one person posted that they got long pad life despite the conditions. for example some folk said that the quantocks soil type eats pads. I rode there for a wet weekend with no pad wear measurable with verniers. Others ride there without pad wear as well. Same for the peaks and afan.
I remain convinced that short pad life ( under a thousand miles) is excessive wear and due to a combination of factors.
It is a multifactorial thing with riding style, disc size, pad type, conditions all playing a part.