Originally Posted by locorider
The AT is a top heavy bike and a bigger tank will make it even more. If you can deal with it, is your choice, go for it.
But there are other means, like the side panels tanks. You can buy a side panel tank here... http://www.boano.com/special.asp?id=51&mod=no
which will help in keeping the weight low, while adding 17 liters of petrol.
Another radical move, will be to build a tank where the airbox/ or battery box resides, if possible. I've heard about this before but dont know if it is possible.
With the rear tanks it gets difficult to mount pannier and boxes. With fully loaded boxes the rear frame already starts feeling rather week. Then add the weight of the fuel...
The bikes (TA and AT) jump / fly / land really nice, even with full tanks, and, when you know how to do it, also with bigger tanks. But me personally, I would not go for more than 45l in a front tank.