Cooling Water Expansion Tanks

PDJ

Senior member
 Worsley Manchester
Do the Cooling Water Expansion Tanks split and fail in the Z4M S54 engined cars like they do in other models?

One of the few things I have not changed yet.
 
mmm-five said:
Not changed mine, and it's not failed...yet (160k miles / 14 years old).

Mine is an 06 car and original as far as I know with 91,000 milesd
 
Have not changed mine - 2008 with 63k miles. If it's not losing/leaking coolant, I think you're OK.

FYI - I have changed it 2x on my 2004 e53 X5 with 147k miles, but the Z has been good most likely to the location away from the hot radiator.
 
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