Worst bike you ever bought and why

[LongRanger_imp]

2001 BMW R1100S. Sexy bike. I bought it for the looks and panache. It handled great and the color matched my K1200RS but the engine was a paint shaker at 70+ mph, the wind noise would deafen you within ten minutes, and the seat was a cruel joke. It never stranded me but servicing was expensive, accessories were expensive, and it really didn't do anything better than a common 750 sport bike. Each time I see one today I have to force myself to resist the urge to buy another.