They're heavy, cumbersome, and fearfully expensive to run - even more so if it's been neglected.
Exhausts fracture at the 4 into 1 join. Discs fall apart, calipers sieze, inlet airleaks, clutches fail at low mileage, valves burn out ( especially exhaust on number 2 cylinder), all the cams have to be removed to adjust valve clearences, forkseals leak usually the stanchions worn, ABS claps out, thirsty, exhaust studs snap in the cylinder head, head gaskets fail etc etc.
And the K1100 seems to struggle to get past 70k miles with out a huge bill for something. And they never run sweet after some miles have been racked up.
Nothing like a K100 or K75.