My fuel consumption has improved dramatically (20% or so) since it topped about 13,000 miles and I switched to Avon Roadriders. I used to get around 45-50mpg and now get around 60mpg. To be honest, I'm not sure whether it was the engine freeing up a bit more or the tyres, but the sidewind stability improved a lot when I ditched the pretend off-road tyres.
"On that? You're nuts!" - My cousin's boyfriend
Current Bikes - Kawasaki KLE500 '05 (May 06)
Previous Bikes - Hyosung GF125 (Oct 05 to May 06)