I don't care what anyone says....buying trackside is the best. The tires are cheaper and ARE fresher than mail order. Tires bought trackside are newer, there's no shipping, and it includes mounting and balancing. You can order from trackside vendors in advanced. I always did and mount them myself so I didn't have to worry about being rushed to have them mounted at the track. And sometime tires mail ordered are different than what you get at the track. Compounds or carcasses sometimes can be changed without an online source even knowing about it. Just my opinion though.