My topbox is great, doesn't leak at all and there's hiss as it opens, like the doors in Star Trek
The panniers (bought later) leak in heavy rain and there's a puddle in the bottom (rather like pictures of yours that Ive seen, Cookie).
The only way round this is the BMW liners that are totally waterproof and very robust. They are also really handy for unloading your panniers - open up and pull the bag out
Bikes off to CW's tomorrow for a service and some warranty work so i've saved a puddle for them in the my top box.
Currently sitting pretty at 6mm deep after one week of mild wet weather...
I'll see what they say...probably drill a hole or three
Aye the same thing happens to me My ring stings in the morning and my flys seem to have magically popped open of their own accord by morning Have no idea why this happens
Haven't tested it myself, but I understand that the panniers are particularly susceptible to leaking when fully loaded. They're cantilevered off the frames (rather than supported from below like on the 1150GSA?) which cause them to flex when loaded. The pannier top doesn't flex to the same degree which ultimately leads to the leak.
I'll be testing mine in a few weeks on a long trip. When (if) they leak, I intend to return them to the dealer for the revised seal. Either way, I use them with waterproof OEM liners to be sure.