Well if you look at most newer vehicles with serpentine belts, you will notice that there is a LOT of tension on most if not all of them. Thats pretty ******* the bearings, ....So....we also know that new stuff is not designed to last half a lifetime like they used to so im thinking that this is a sneaky way of killing accessories faster. ****** me off. Some of them are so tight im not sure how accessories even last as long as they do..
Where as with a v-belt system, I always have my belts slightly on the loose side to be easy on the bearings of the water pump, PS pump etc...