Here's the bearings out of John's Mineral White E93 with 29,xxx posted above ^. This is a proper example of bearing wear. Keep in mind, it is very important to emphasis here, that these bearings are a wear item. The problem is how unevenly and deep they typically get worn. The WPC GTS treatment is stronger and more resilient than the factory.
John has owned this car for most of its life, most of which have also been supercharged. He is very adamant about initial warm ups, oil change intervals, and overall usage. He does have fun with the car, but not in an abusive manner, certainly not until she's ready.
Considering that the supercharger does put a decent amount of added strain on the engine, you can see how well these look with the right care from the beginning. This is how the OEM bearings should be wearing near 40-50k. At this rate, his care and maintenance will keep the WPC bearings in there for a very, very long time.
