A BMW R1100RT 25% heavier than an ST1100 or a Glide, which are its direct competitors? Surely not. 20% bigger in mass? You mean in dimension, I think, since mass and weight are the same give or take the force of gravity, but okay, larger. It depends on the rider's size. Big guys find sportbikes a squeeze: tourers are more comfortable. 30% higher priced? Oh, PLEASE don't start me on this. Prices of bikes in the US are MUCH less than in the rest of the world, except for BMW, who charge the same price worldwide. Outside the US, BMWs are competitively priced, and hold their value better, longer.