Tried both those methods, no luck. The bike is a standard 07 Trek520 and the tires originally on there were 700x32c , so I bought marathons in that size also, assuming that would be fine.
I cannot do that "rolling" motion for the last little bit because it seems impossible to get the bead over the rim at all, its so rigid. It basically wont even get above the lower part of the rim without help of a tyre lever.
Duckfat, you mentioned a good tip might be to lock the tyre down with the levers for the very last bit, what do you mean by this? How do I do this? I've tried jamming the tyre levers between the tyre & rim on both ends of the "last bit", but when I use the 3rd lever in the centre to try and pop it over the rim, its no good, both levers just pop out and back to square 1
