Vehicles affected by service bulletin: The problem: Timing chains on N63 engines have been found to stretch and wear out prematurely, resulting in premature valvetrain wear and reduced engine ...

Let’s talk timing chains and BMW. Last month three Hughes Limousines 7 Series BMWs were off the road with timing-chain issues. The three cars were repaired by BMW dealers. Within a week one engine had ...

Luxury car ownership shouldn’t include $15,000 surprise engine bills, yet BMW’s N63 twin-turbo V8 delivers exactly that nightmare scenario. This engine-powering flagship sedans and SUVs since ...

Originally published in the June 2015 issue of Road & Track. I have lots of friends who work on cars for a living. You could call them mechanics, but I think of them as supersleuths. I could write a ...