I had a 2005 Suzuki Burgman 650......Suzuki's super-scooter with an electronic CVT transmision. It was purposely overbuilt because Suzuki wanted to err on the side of caution with a new design. The weight came in at 635# wet. That's as heavy as many big cruiser bikes. Yet that thing was nimble as heck. Our NTs aren't really lightweights when you compare them to other bikes (the BMW R1200GS weighs as much!), yet they are pretty well balanced. So weight is part of it, but so is where the weight is located.