2008 e90 M3
seller had oil tested in Sept/Oct 2017 at 54,050 miles
lab said "great report"
i bought the car in May 2018 with 57514 miles
replaced rod bearings at 58,692 miles this week
with BE bearings and ARP bolts
and this is the condition the rod bearings were in
(they're not in any particular order)
i wanted to do it as insurance and for peace for mind
now i'm really glad that i did it