I reckon the 14T front wears out 30% faster than the 15T. However, I should point out that I didn't fully "use up" the 14T sprocket I fitted as I didn't get on with the lower gearing and went back to 15/45.

I tried the 14T sprocket soon after I got the bike when I hadn't completely got to know the machine. Further on down the line, after I'd sorted out the open and closed loop fuelling, the need for lower gearing seemed less important anyway, as the bike pulled more cleanly from lower revs. By this point in time I'd also got more accustomed to riding the T�n�r� off piste and found that I could up the speed a bit on trails and felt less in need of the lower gearing.

I would spend a bit more time with the bike and the 15/48 setup and see how it goes. If it's still not right for you, then go for a 14T front - always best to try new things in small steps. I wouldn't jump straight to 13/48, as that is (on paper anyway) a seriously low final drive ratio...

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