Track Tires - How Old is Too Old?
 

I move back to the east coast from being out in California for a couple years and my track car never made the journey. Now that I am back I am looking forward to running again and still have my set of NT-01's mounted up and in my garage. My question is, has the 3 years of non-use caused these to become "dead" tires now? Thanks in advance for any insight and/or experience you can share!