I`ve had alot of problems with pinch flatting inner tubes,it may have something to do with 235lbs weight and complete lack of subtlety in my approach!!! However I seem to have found a very good comprimise in th Nokian DH tube. It`s not insanely heavy but is standing upto dogs abuse with impunity! Anyone else had similar problems or solutions? Is there a Clydesdales type discussion site on BikeMagic or elsewhere? Ceers Mike;-}
i'm 220 lbs and have 6 pairs of tyres heaviest being 500 grms and lightest 360 grms they all have panaracer flataways kevlar anti puncture liners and i find them to work well but if you get water on the liners it can eventually rot, anyway because of the liners i find that i can get away with continental supersonic inner tubes@95 grms each.