Thats what i worried about - last wkend ran 2.5 maxxis dh tubes at stromlo (12 runs pork barrel / double diss) and got flat. Ran dh tubes in my glory for 4 yrs with two flats only. Might try free ride but hard to get with prestaI've found that I get flats a bit more often running the larger tubes in smaller tyres.. could just be me though. Had 2.5-2.7 DH tubes in a 2.35 High Roller and was pinching them too often. Got freeride tubes and no more issues..