One of the achilles heal of the BMW E9x M3
We offer a complete uprated rod bearing service for the E90 E92 E93 M3
Many factors can lead to bearing failure on these engines including warm up period, service intervals as well as the original BMW design. We offer a uprated bearing service preventing failings and costly rebuilds.
As can be seen in the photos below once the original bearing wears down to the copper the bearing becomes thin to the point it picks up on the crankshaft and spins, unfortunately resulting in a damaged crankshaft and engine rebuild