Well, I dunno if it were from the low PSI or the tube just being old(1st time since I started about 3-4 months ago), but I pinchflatted on a ledge that's not too sharp, and I've hit the ledge HARDER at times and not pinchflatted.... Yeah kinda a useless post, but anybody ever try to use like a DH or thorn tube with the Michelin 24.1 2.5? Does it make a difference in terms of rebound? a Thorn tube, is the rubber just thicker on the face, or is it slightly thicker everywhere? Like I had an Intense tube in an Intense EX909 and the rebound was INSANE....coulda been mostly from that 4-ply, but I NEVER flatted, and I hit stuff HARDER on my .243..... So is it just a waste or should I just keep buying shit tubes? BTW, psi was at around 13 on a DX32 w/Mich comp 24.1 2.5.....I'm a 145-155 rider, pretty smooth I guess....for the limited skills I have, LOL! Anybody?