I think you should first determine what you need. Ask yourself first why you’re buying a motorcycle? Is it a need or a luxury? If it is a need, ask yourself how fast do you need it to be? Are you going to use it to rush off to work or deliver goods? Or are you just using it plainly as a daily transportation device? After doing these and determining what you really want, you may now ask the sales person the same things you need. I usually ask first if the motorcycle is very efficient in terms of gas and mileage since I personally just need a motorcycle to get me from point a to point b. Then I ask them about the safety and the warranty.