[phubar]

I replaced the serpentine belt as preventive maintenance and noticed the PS pulley is chipped, probably due to hitting the sub-frame in a massive pothole hidden during the snow storm a few weeks back.
The fixes as some of you may know are, replace the subframe or grind it down, which eventually I will do when I replace the turbos but in the mean time I've been looking at the pulleys from other BMWs trying to figure if there might be a smaller pulley we can use. Has anybody tried this before?There are plenty of options that seem like they would fit:
Stock

E39


E60

[buzzard]

I think a smaller pulley on the accessory would technically "overdrive" the accessory. A smaller drive pulley would "under-drive" the accessories.

[phubar]

gotcha. fixed the title. thanks.