please tell me how you plan to write of your bike for Tax as i and other riders would love to do the same.
You can't. I mean, you can, but you're asking for trouble.
You can write off any vehicle if it's used specifically for your business, so if he's a courier but that's about it, and even then, one look at your return by someone with a basic knowledge of bikes and welcome to Auditland!
source: run my own business, write off lease payments, insurance, gas, parking on my second car because I use it exclusively for work.