Since there are two panniers on your bicycle, some may conclude that they have to distribute the weight to keep balance. This is not entirely true as depending on how you pack your bike panniers will determine how your handling is on your bike. Many will distribute the weight between the two bags so they are balanced and the rider can have a smooth ride. Some riders experiment with their weight distribution to find a happy medium for pleasant riding experience. The best advice we can give you on weight distribution is to experiment with your packing.