Just found this comment made by MBUK magazine when reviewing a Conti Diesel tyre:
"If you like freeride and enduro style riding, the perfect tyre combo for this season has to be a Diesel up front with a narrower 2.3 in Continental Gravity tyre out back"
Why would you run a narrower tyre on the rear? Is it a case of the front of the bike absorbing more of the bump impact?
This would be good on my bike cos the chain is rubbing on the tyre when in the lowest gear! And the tyres sometime rub on the inside of the frame at the bike but I'm not bothered about that.