On my older Araya hook-edge road rims, I've noticed the "hook edge" isn't as sharply angled as on other hook edge rims. All the Araya road rims I have are older than '91, so I don't know if this would be the case with your rims or not, but if it is I think it would make sense that they're probably not the best choice for extremely high pressure tires like you're running. If you have some other hook edge rims to compare them to, you might check and see if this is the case............As a side note, I've recently picked up some Mavic Module E rims, which I believe were the first hook edge clincher rims for high pressure road tires available, and they do have the very sharply angled, distinctinctive hook edge like you would see on the most modern rims today. And these Module E's are from the very early '80's I believe-
Last edited by well biked; 04-30-07 at 07:20 AM.