Originally Posted by bradleyland
Why would that mean the M3/M4 turbos will "not last forever"? Are Garett turbos considered unreliable or something?
Based on what we saw on M5's (twin-scroll) turbos, there are weaknesses (to be more specific, there are two major weakness),
which comes from the design dictated by BMW to cost cut the expenses.
Factory M5 turbos are good for 60-70K.