First time to post here and have enjoyed reading Roundel and being a member. My dilemma is a 2005 M3 ZCP with 50,650 miles, driven mostly as a commuter. But it needs an engine replacement. 2 bolts mounting the sproket to the camshaft sheared and crippled the engine. The car is clean inside and out, but is it worth it to fix, 15K+ for a new engine and install, with BMW covering about 50% and me needing to cover the rest? It is the best deal I could negotiate from BMW NA, even though I don't agree with their claim of frequent over rev indicators logged by the computer.. Due to the cost is it better to cut losses and sell the chassis in hopes there is a buyer for it or fix it and drive it some more before selling it?