My friends 2009 Honda CBR 1000 shows about 8mph less than my 2010 Yamaha Majesty. Are there know issues with the Majesty? Could there be something wrong with my bike's speedometer? I just bought it 2 weeks ago, and I'm very aggravated and **********! I think my model is the YZ-425 or 450. It's on there site, so specs are available.

Sometimes there is some variance between identical new motorcycles. I had friend claim that his BMW speedometer was accurate and my Honda was off by 5 mph. We had the same brand(Dunlop) and size of tire. I changed my tire, same brand(Dunlop), same size, different "style" and now both speedometers read the same speed . This tire was the same number size but mounted stood taller than the old tire. What my friend failed to realize was that his cycle came stock with a Metzeler so he was not reading accurately either. So do not dismay, your friend may not have the correct height tire on his bike. You will have to make some speed runs past on of those signs that tell you how fast you are going and see how accurate your machine is. My 2009 Suzuki DR200 reads 2 MPH slow by the police speed signs.