A fluid leak may develop from one or more power steering hose. When a leak is being repaired, it is not uncommon for multiple hoses to be replaced.Google+
Car Problem Reports
BMW M5 Multiple Power Steering Hoses May Simultaneously Fail
BMW M5 Problem
Average Mileage: 102,833 mi (75,000 mi - 150,000 mi)
It's life with any car -- rubber parts eventually crack, tear and leak. Belts, hoses -- it happens with any car. Placement of hoses relative to engine effect lifespan -- do they run aside hot metal or further out in engine bay?
Visitor, 2002 BMW M5, 150,000 mi
Power steering shuddering. Developed leak in the hoses. Had them replaced.
Visitor, 2003 BMW M5, 83,500 mi
power steering hose leak identified when vehicle was in for other service; fixed @ dealer