So I cornered the Dunlop rep at the Cycle World show Sunday and I asked him straight up, "What is the shelf-life of your tires?". I told him how I buy NOS tires off eBay for cheap and told him how some on this forum would be leery of that due to tire age. He told me that while shelf life does depend on the conditions of storage, they warranty their tires for 6 years and if there are no cracks or weather checking on the tire, they're good to go.

You meet the nicest people on a Honda (forum).