it's pretty common to replace pressure hose at 50K-60K miles. normally the leaking isn't bad. not even dripping. just the hose is a bit wet.

as for the other hoses(non-pressure hose), it rarely leaks thru hose itself. it's the hose clamps(to the fluid reservoir) that is the culprit. you might be able to replace the clamps to stop leaking on them.

try to ask if BMW can give you a goodwill repair since it's less than an year after your original warranty expires and your car is still under 50K miles.