(S54, S65 and S85) - BMW has created and produced some of the greatest naturally aspirated motors available on the road today. Due to these motors high strung and high revving nature, they do need some additional upkeep to assure long term reliability of the powertrain.
The connecting rod bearings are one of the weaker links in the motor that require preventive replacement for increased long term reliability. It is much more ideal and cost effective to tackle this project prior to failure. Once a rod bearing fails and spins, it can compromise the crank or even the whole motor!
We have done full rod bearing replacements on the BMW S54B32, S62B50, S65B40, and S85B50. From our years of experience with these engines, we have assembled comprehensive packages to address this underlying issue.