Thankfully, you’re free to upgrade your tires at will which is what we suggest that you do as soon as you wear them out. The tire you choose to fit will be entirely up to you but clearly some perform better than others. As with most things in life, it’s a compromise between affordability and performance as well as taking into account exactly what you use your bike for.
But, these bikes can also be a hindrance to stress free learning. Many new track day riders are better off with a simple, low powered machine that keeps them running a bit slower until they can get a handle on racetrack riding. One reason my friend Josh was having trouble at his first several track days is because he was driven to ride his GSXR1000 faster than he should have. Read about Josh’s mishap.
Not precious- Many new track day riders suffer undue stress over the anxiety of crashing their beautiful, high-dollar, chrome and carbon laden street bike. Thankfully, it’s easy not to crash at a track day if you ride within your ability. So, if all you have is your pride and joy, go ahead and bring it to the track, but at some point when you start pushing harder, you may want a dedicated track bike that has less sentimental value.