There is already a collaborative effort/database in existence! It's not on this Forum! Delphi, has "Riding The Dark Side Forum" with a Car Tire Database which will provide you with some real enlightenment! The Database includes Make and Year of Bike, Brand Tire, Tire Size, Sweet Spot Air Pressure, Air Pressure Required to Seat Tire Bead etc. etc. You have to be a Member of that Forum to review the Database. In addition there is user data on the actual mileage achieved by each individual. I would "strongly suggest" you review that site and get a "Real Grasp" for the efforts of Dark Siders to have a specific center for "Relevant DS Data". There is a "assumption" by critics that Dark Siders aren't "well read" before we take the step to the DS. That "assumption" is far from the truth!