I have a set of these, bought as a set of Hope Hoops. They are insanely tight to get tyres onto. I have tried to fit Conti Mountain Kings, Kenda Karmas, Bontrager somethings and (by way of experimentation) Schwalbe Kojaks and Conti Gatorskins.
I cannot get any of these tyres onto the rim without such heavy use of levers that the tube doesn't stand a chance. Even without a tube any of these tyres is a serious fight. Getting them off is also a total pain. Bruised knuckles, damaged tyre levers, sweat and much cussing.
Are these rims notoriously tight? Is there a particular sort of tyre that works wonderfully? Any particular tricks?
Or have I just got an evil pair?
(I'm not a huge expert, but I can usually fit and remove tyres without injuring myself...)