Originally Posted by
Trevtassie
Seems pretty clear, one is for frames without dedicated rack mounts where the load is hanging off a point remote from the point of maximum strength, The other is for frames with rack mounts, obviously fitted with a rack to carry the extra load which is distributed to a maximum strength point, the rear drop outs.
So if the rider weight is 355 lbs. and is carrying zero pounds of luggage, same difference?