Any benefit to replacing the plastic WP pulley with a metal one? FCP has one, but some of the reviews imply that the extra weight vs the plastic one causes premature WP wear.

FCP also has a beefier WP that I've considered. https://www.fcpeuro.com/products/bmw...wart-888010330

The prior owner installed a no-name Chinesium WP which failed catastrophically halfway through a 350-mile road trip, stranding me for several days in a small town over the July 4 holiday. The serp belt was destroyed too but fortunately did not get wedged into the crank seal.

That issue on N55 seems related to a leaky oil filter housing gasket at least based on the F30 forum I'm also on. I check mine every few months.

__________________