I've got a 110/100/18 Blackrock Enduro knobbly which is only slightly worn.
I would guess at least 12mm centre knobbles and 15mm at least side knobbles. Used it twice at Brixton MX track and once for laning. Wasn't great on the lanes but it was a very, very wet day. It would be fine in the dry and it was fab on soft ground at the track...did't come off once
Its now off the bike and in the garage as I have a C02 on the rear.
Yours for £10 if you pick up from Plympton.
Cheers Ryan
-- Edited by Mossy on Friday 18th of May 2012 09:41:53 AM