these type of older rims were the norm but generally phased out in the late 70's in favour of the narrower hooked modern rims, older style touring tyres were fine on them if inflated between 60/80 psi (if you had a need for lighter rims you bought sprints and tubs) most modern tyres especially folding warn not to use on this type of earlier non hooked rim.....most bike shops should be able to source you a decent 700/28 tyre that would fit ok though
these type of older rims were the norm but generally phased out in the late 70's in favour of the narrower hooked modern rims, older style touring tyres were fine on them if inflated between 60/80 psi (if you had a need for lighter rims you bought sprints and tubs) most modern tyres especially folding warn not to use on this type of earlier non hooked rim.....most bike shops should be able to source you a decent 700/28 tyre that would fit ok though